CN215110629U

CN215110629U - Multifunctional combination valve

Info

Publication number: CN215110629U
Application number: CN202121321848.6U
Authority: CN
Inventors: 张想; 杨炳华; 李振宇; 马永凯; 黄伟彬; 沈鸿; 叶敬红; 高伟; 曾斌; 焦仕立; 崔常府
Original assignee: CNOOC China Ltd Zhanjiang Branch; CNOOC China Ltd Hainan Branch
Current assignee: CNOOC China Ltd Zhanjiang Branch; CNOOC China Ltd Hainan Branch
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2021-12-10
Anticipated expiration: 2031-06-15

Abstract

The utility model relates to the technical field of petrochemical equipment, in particular to a multifunctional combination valve, which comprises a combination valve body, a valve core and a handle structure, wherein the valve core is arranged in the combination valve body, the valve core is provided with a flow passage, and a valve clack is arranged in the flow passage; the handle structure is rotatably inserted into the composite valve body and connected with the valve core, the valve clack is eccentrically provided with an eccentric rotating part, and the valve clack is elastically and rotatably connected with the flow channel through the eccentric rotating part. The utility model discloses the operation of being convenient for uses reliably, and easy to maintain can switch the effect direction of fluid non return function, and can reduce the flow resistance that the fluid flow produced by a wide margin, reduces the throttle influence, reduces the fluid energy loss because of the throttle produces.

Description

Multifunctional combination valve

Technical Field

The utility model relates to a petrochemical equipment technical field, more specifically relates to a multi-functional combination valve.

Background

In the petrochemical industry, check valves and ball valves are widely applied to various pumps, compressors, pressure containers and other functional equipment, and play roles in one-way check and fluid cutoff. Conventionally, a check valve and a ball valve are installed in a pair for use, but the existing check valve installation has the following problems: the number of connecting parts in the pipeline is large, so that the number of sealing end faces is large, and oil gas leakage is easy to generate; when the flow direction of the valve body needs to be changed, the check valve on the pipeline can only be disassembled and reversed, so that the maintenance workload is increased, and the operation can be carried out only after the production is stopped. To the narrow and small space of part, and the equipment of installing a plurality of valves simultaneously, will be unfavorable for the installation and the maintenance of pipeline overall arrangement and valve.

Chinese patent publication No. CN202719214U discloses a wafer check valve, which comprises a valve body and a valve seat, wherein the valve seat is disposed in the valve body, a valve flap is disposed on the valve seat, the valve flap is rotatably connected to a shaft, two ends of the shaft are respectively inserted into shaft holes, the shaft holes are disposed on the valve body, the valve flap is disposed with a torsion spring for urging the valve flap to return toward the valve seat, the torsion spring is provided with a straight rod, a cross rod is disposed at the end of the straight rod of the torsion spring, and only the cross rod of the torsion spring is in planar contact with the valve flap. The utility model discloses in, the horizontal pole of torsional spring is the only contact point of torsional spring and valve clack upper surface, therefore its moment is unanimous all the time, consequently makes the atress of two valve clacks more balanced.

However, the check valve in the above scheme has a small flow area, which can cause throttling of fluid, resulting in severe capacity loss.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a multi-functional combination valve, the operation of being convenient for, use reliably, easy to maintain can switch the effect direction of fluid non return function, and can reduce the flow resistance that the fluid flow produced by a wide margin, reduces the throttle influence, reduces the fluid energy loss because of the throttle produces.

In order to solve the technical problem, the utility model discloses a technical scheme is:

the multifunctional compound valve comprises a compound valve body, a valve core and a handle structure, wherein the valve core is arranged in the compound valve body; the handle structure is rotatably inserted into the composite valve body and connected with the valve core, the valve clack is eccentrically provided with an eccentric rotating part, and the valve clack is elastically and rotatably connected with the flow channel through the eccentric rotating part.

The utility model relates to a multifunctional combination valve, the combination valve body is rotationally connected with a handle structure, so that the multifunctional combination valve can rotate a valve core through the handle structure, and the switching of the action direction of the fluid non-return function is realized; the eccentric rotating part is arranged, so that the position of the rotating axis of the valve clack is deviated, the valve clack is convenient to rotate and open, the flow resistance generated by fluid flow is reduced, the throttling influence is reduced, and the energy loss of the fluid generated by throttling is reduced.

Preferably, the eccentric rotating part is connected with the inner wall of the flow passage through an elastic rotating mechanism; and a first limiting structure for limiting the rotation angle of the valve clack is arranged in the flow channel, and the first limiting structure is abutted against the valve clack and the elastic end of the elastic rotation mechanism.

Preferably, the elastic rotating mechanism comprises a rotating shaft and an elastic piece, the rotating shaft is inserted in the eccentric rotating part and connected with the inner wall of the flow channel, the elastic piece is sleeved on the rotating shaft, and two ends of the elastic piece are respectively abutted against the outer wall of the valve clack and the first limiting structure.

Preferably, the first limiting structure comprises a crescent plate assembly for limiting the return position of the valve clack and a limiting rod for abutting against the elastic eccentric rotating mechanism; the crescent plate component is connected with the inner wall of the valve core and abuts against the valve clack, and the limiting rod is arranged in the valve core and abuts against the elastic component.

Preferably, the composite valve body is detachably connected with a packing box, one end of the handle structure is a holding end, and the other end of the handle structure is connected with the valve core after being sequentially inserted into the packing box and the composite valve body; and a sealing structure is arranged between the stuffing box and the handle structure. The setting of gland packing box can be used for packing seal structure, improves the connection leakproofness between handle structure and the combination valve body.

Preferably, the sealing structure comprises a gland and a plurality of packing sets, and the packing sets are sleeved on the handle structure; one end of the gland abuts against the packing, and the other end of the gland is detachably connected with the packing box.

Preferably, the handle structure comprises a handle and a valve rod, one end of the valve rod is inserted into the compound valve body and connected with the valve core, and the other end of the valve rod extends out of the compound valve body and is connected with the handle.

Preferably, the composite valve body is provided with a second limiting structure for limiting the rotation angle of the handle structure, and the second limiting structure is located at a position close to the holding end of the handle structure.

Preferably, the compound valve body is rotatably inserted with a positioning rod, and the positioning rod is connected with the valve core. The positioning rod is arranged, so that the valve core can rotate by taking the positioning rod as an axis, and the valve core is prevented from shifting during rotation.

Preferably, a wear-resistant sleeve is arranged between the positioning rod and the valve core.

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

Drawings

Fig. 1 is the internal structure schematic diagram of the multifunctional combination valve of the present invention.

Fig. 2 is a schematic structural diagram of the multifunctional combination valve of the present invention.

Fig. 3 is a using state diagram of the valve flap of the utility model when closed.

Fig. 4 is a using state diagram of the valve flap of the utility model when opening.

Fig. 5 is a schematic structural diagram of the inside of the valve element of the present invention.

Fig. 6 is a schematic structural diagram of the valve flap of the present invention.

Fig. 7 is a schematic structural diagram of a second limiting structure of the present invention.

The graphic symbols are illustrated as follows:

1-a compound valve body, 11-a valve housing, 12-a valve body, 2-a valve core, 21-a positioning rod, 22-a wear-resistant sleeve, 3-a valve flap, 31-an eccentric rotating part, 4-an elastic rotating mechanism, 41-a rotating shaft, 42-an elastic part, 5-a first limit structure, 51-a first crescent plate, 52-a second crescent plate, 53-a limiting rod, 6-a packing box, 7-a handle structure, 71-a handle, 711-a second through hole, 72-a valve rod, 8-a sealing structure, 81-a gland, 82-a packing, 9-a second limit structure, 101-a sealing gasket, 102-a sealing ring, 103-a sealing ring, 104-a sealing sleeve, 105-a first gasket, 106-a second gasket, 107-an inner hexagonal bolt, 108-positioning bolt.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Example 1

Fig. 1 to 6 show a first embodiment of a multifunctional combination valve of the present invention, which includes a combination valve body 1, a valve core 2 disposed in the combination valve body 1, and a handle structure 7, wherein the handle structure 7 is rotatably inserted into the combination valve body 1 and connected to the valve core 2; the valve core 2 is provided with a flow passage, a valve clack 3 is arranged in the flow passage, the valve clack 3 is eccentrically provided with an eccentric rotating part 31, and the valve clack 3 is elastically and rotatably connected with the flow passage through the eccentric rotating part 31.

The multifunctional composite valve can rotate the valve core 2 through the handle structure 7 by the arrangement that the composite valve body 1 is rotationally connected with the handle structure 7, so that the action direction of the fluid non-return function is switched; the eccentric rotating part 31 is arranged, so that the position of the rotating axis of the valve clack 3 is deviated, the valve clack 3 is convenient to rotate and open, the speed of the valve clack 3 when the valve clack 3 is opened can be increased, the flow resistance generated by fluid flow is reduced, the throttling influence is reduced, and the fluid energy loss generated by throttling is reduced.

As shown in fig. 1 and 2, the composite valve body 1 includes a valve housing 11 and a valve body 12 detachably connected to the valve housing 11. In this embodiment, the valve housing 11 and the valve body 12 are connected by a plurality of sets of bolts and nuts. In order to improve the sealing performance between the valve housing 11 and the valve body 12, a sealing ring 103 is provided between the valve housing 11 and the valve body 12, and specifically, the sealing ring 103 is a graphite sealing ring.

In addition, the combination valve body 1 is rotatably inserted with a positioning rod 21, and the positioning rod 21 is connected with the valve core 2. As shown in fig. 1, the positioning rod 21 is inserted from the lower end of the valve housing 11 and connected to the valve body 2. In order to reduce the abrasion of the positioning rod 21, a wear-resistant sleeve 22 is sleeved on the positioning rod 21, and the wear-resistant sleeve 22 separates the positioning rod 21 from the valve core 2, so that the abrasion of the positioning rod 21 and the valve core 2 caused by friction during rotation is reduced. In order to realize the sealing between the valve casing 11 and the positioning rod 21, a second gasket 106 is additionally arranged when the positioning rod 21 is installed; the second gasket 106 in this embodiment is a sealing gasket.

In addition, the eccentric rotation part 31 is connected with the inner wall of the flow passage through the elastic rotation mechanism 4; the flow channel is internally provided with a first limit structure 5 for limiting the rotation angle of the valve clack 3, and the first limit structure 5 is abutted against the valve clack 3 and the elastic end of the elastic rotation mechanism 4. The elastic rotating mechanism 4 includes a rotating shaft 41 and an elastic member 42, the rotating shaft 41 is inserted into the eccentric rotating portion 31 and connected with the inner wall of the flow passage, the elastic member 42 is sleeved on the rotating shaft 41, and two ends of the elastic member 42 respectively abut against the outer wall of the valve flap 3 and the first limiting structure 5.

As shown in fig. 6, the eccentric rotation portion 31 divides the valve flap 3 into a first flap main body and a second flap main body, and the area of the first flap main body is smaller than that of the second flap main body, specifically, the eccentricity ratio is 2: 1. In this embodiment, the eccentric rotating portion 31 includes a plurality of vertically arranged mounting blocks, the mounting blocks are provided with first through holes for inserting the rotating shaft 41, and the rotating shaft 41 sequentially passes through the first through holes on the mounting blocks to realize the insertion connection with the valve flap 3; the elastic member 42 is sleeved on the rotating shaft 41 and located between the adjacent mounting blocks.

The first limiting structure 5 comprises a crescent plate component for limiting the return position of the valve clack 3 and a limiting rod 53 for abutting against the elastic component 42; the crescent plate component is connected with the inner wall of the flow channel of the valve core 2, and when the valve clack 3 is in a closed state, the crescent plate component is abutted against the valve clack 3; the limiting rod 53 is fixedly connected with the crescent plate assembly, and the limiting rod 53 is vertically arranged and is abutted to the elastic piece 42.

As shown in fig. 3 to 6, the crescent plate assembly includes a first crescent plate 51 and a second crescent plate 52 fixedly connected to the inner wall of the flow channel of the valve core 2, the first crescent plate 51 is located at a side close to the first valve flap main body, the second crescent plate 52 is located at a side close to the second valve flap main body, when the valve flap 3 is in a closed state, the first crescent plate 51 abuts against the first valve flap main body, the second crescent plate 52 abuts against the second valve flap main body, and the first crescent plate 51, the second crescent plate 52 and the valve flap 3 form an axial seal, so that the fluid can be prevented from flowing backwards; the limiting rod 53 is fixedly connected with the first crescent plate 51. In this embodiment, the elastic member 42 is a torsion spring, the torsion spring is sleeved on the rotating shaft 41, one end of the torsion spring abuts against the second valve body, and the other end abuts against the limiting rod 53.

Specifically, fig. 3 is a side view of the fluid outlet end of the valve core 2 when the valve flap 3 is closed, and fig. 4 is a side view of the fluid outlet end of the valve core 2 when the valve flap 3 is opened; in order to prevent the crescent assembly from influencing the opening and closing of the valve clack 3, as shown in fig. 5, the first crescent plate 51 is located at the front position of the valve clack 3, namely, at the side close to the fluid outlet end in the flow passage of the valve core 2; the second crescent plate 52 is located at the rear of the valve clack 3, i.e. at the side of the flow channel of the valve core 2 close to the fluid inlet end.

In addition, two ends of the rotating shaft 41 extend out of the eccentric rotating part 31 and then are connected with the inner wall of the flow channel of the valve core 2, a sealing sleeve 104 is arranged between the rotating shaft 41 and the flow channel, and the sealing sleeve 104 is sleeved at two ends of the rotating shaft 41 and can form axial sealing; specifically, in this embodiment, the sealing sleeve 104 is a tetrachloroethylene sealing sleeve.

In addition, the upper end of the valve casing 11 is detachably connected with the stuffing box 6, one end of the handle structure 7 is a holding end, and the other end is connected with the valve core 2 after being sequentially inserted into the stuffing box 6 and the valve casing 11; a sealing structure 8 is arranged between the stuffing box 6 and the handle structure 7.

As shown in fig. 1 and 2, the handle structure 7 includes a handle 71 and a valve rod 72, one end of the valve rod 72 is inserted into the combination valve body 1 and connected to the valve core 2, and the other end of the valve rod extends out of the combination valve body 1 and is fixedly connected to the handle 71. When the handle 71 is rotated, the valve rod 72 can drive the valve core 2 to rotate, so that the action direction of the fluid check function is switched. As shown in fig. 2, a second through hole 711 is provided at one end of the handle 71 close to the valve rod 72, and the positioning bolt 108 is screwed to the stuffing box 6, so that when the rotational position of the valve body 2 needs to be positioned, the positioning bolt 108 can be inserted into the second through hole 711 for positioning.

In addition, in order to improve the sealing performance between the valve core 2 and the compound valve body 1, sealing rings 102 are respectively arranged at two ports of a flow passage of the valve core 2, in this embodiment, one of the sealing rings 102 is located between the valve core 2 and the valve housing 11, and the other sealing ring 102 is located between the valve core 2 and the valve body 12, as shown in fig. 1. In this embodiment, the sealing ring 102 is a tetrachloroethylene sealing ring, and the sealing ring 102 has a stepped position, which can further improve the sealing performance, as shown in fig. 1.

In addition, the sealing structure 8 includes a gland 81 and a plurality of packing sets 82, and the packing sets 82 are sequentially sleeved on the valve rod 72; the gland 81 is also sleeved on the valve rod 72, the lower end of the gland 81 is abutted against the packing 82, and the upper end of the gland 81 is detachably connected with the packing box 6. In this embodiment, the gland 81 is connected to the stuffing box 6 by bolts and nuts.

The stuffing box 6 is connected with the valve casing 11 through an inner hexagon bolt 107, and a first gasket 105 for sealing is arranged between the stuffing box 6 and the valve casing 11; a sealing gasket 101 is arranged between the lower end of the packing box 6 and the valve rod 72, so that the sealing performance can be improved; in this embodiment, the gasket 101 is a tetrachloroethylene gasket. As shown in fig. 1, the valve stem 72 is connected to the valve element 2 after passing through the gland 81, the gland 82, the packing 101, and the valve housing 11 in this order.

When the composite valve is used, the initial state of the valve clack 3 is shown in fig. 3, the valve clack 3 is closed, so that a flow channel of the valve core 2 is blocked, when fluid passes through the flow channel, the valve clack 3 is opened by the acting force of the fluid, and the fluid can pass through the composite valve body 1 as shown in fig. 4. When the fluid is gradually reduced, the elastic force of the elastic member 42 can close the valve flap 3, thereby preventing the reverse flow. When the valve clack 3 returns, the limiting function of the first crescent tooth plate 51 and the second crescent tooth plate 52 enables the valve clack 3 to be vertical to the flow channel when the valve clack is closed, and backflow can be further prevented. If the direction of the fluid check function needs to be switched, the valve core 2 is rotated by 180 degrees by rotating the handle 71, and the valve clack 3 is also rotated by 180 degrees, so that the direction switching is realized. If the fluid cutoff function needs to be realized, the valve core 2 can be rotated by 90 degrees by rotating the handle 71, and then the positioning bolt 108 is inserted into the second through hole 711 to position the handle 71, so that the flow passage of the valve core 2 is not communicated with the compound valve body 1, and the fluid cutoff is realized.

Example 2

The present embodiment is similar to embodiment 1, except that the composite valve body 1 of the present embodiment is provided with a second limiting structure 9 for limiting the rotation angle of the handle structure 7, and the second limiting structure 9 is located at a position close to the holding end of the handle structure 7. As shown in fig. 7, in the embodiment, the second position-limiting structure 9 is a position-limiting plate, and the position-limiting plate is connected to the upper surface of the gland 81; the limiting plate in this embodiment is an L-shaped structure, one side of the L-shaped structure is fixedly connected to the gland 81, and the other side is located right above the valve rod 72. The arrangement of the limiting plate can be used for limiting the rotation angle of the handle 71, and the adjustment accuracy of switching the action direction of the fluid non-return function is improved.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides a multifunctional combination valve, includes combination valve body (1) and locates case (2) in combination valve body (1), still includes handle structure (7), case (2) are equipped with the runner, be equipped with valve clack (3) in the runner, its characterized in that, handle structure (7) rotationally insert in combination valve body (1) and be connected with case (2), the eccentricity is provided with eccentric rotation portion (31) on valve clack (3), valve clack (3) are connected with runner elastic rotation through eccentric rotation portion (31).

2. A multifunctional compound valve according to claim 1, characterized in that the eccentric rotary part (31) is connected with the inner wall of the flow passage by an elastic rotary mechanism (4); the flow channel is internally provided with a first limiting structure (5) used for limiting the rotation angle of the valve clack (3), and the first limiting structure (5) is abutted against the elastic ends of the valve clack (3) and the elastic rotation mechanism (4).

3. The multifunctional combination valve of claim 2, wherein the elastic rotation mechanism (4) comprises a rotation shaft (41) and an elastic member (42), the rotation shaft (41) is inserted into the eccentric rotation portion (31) and connected with the inner wall of the flow passage, the elastic member (42) is sleeved on the rotation shaft (41), and two ends of the elastic member (42) are respectively abutted against the outer wall of the valve flap (3) and the first limiting structure (5).

4. A multifunctional compound valve according to claim 3, characterized in that said first limit structure (5) comprises a crescent assembly for limiting the return position of the valve flap (3), a limit lever (53) for abutting against the elastic member (42); the crescent plate component is connected with the inner wall of the flow passage and is abutted against the valve clack (3); the limiting rod (53) is arranged in the flow channel and is abutted against the elastic piece (42).

5. The multifunctional combination valve of claim 1, characterized in that a stuffing box (6) is detachably connected to the combination valve body (1), one end of the handle structure (7) is a holding end, and the other end is inserted into the stuffing box (6) and the combination valve body (1) in sequence and then connected with the valve core (2); and a sealing structure (8) is arranged between the stuffing box (6) and the handle structure (7).

6. A multi-functional combination valve according to claim 5, characterized in that the sealing structure (8) comprises a gland (81) and a number of packing sets (82), the packing sets (82) being sleeved to the handle structure (7); one end of the gland (81) is abutted against the packing (82), and the other end of the gland is detachably connected with the packing box (6).

7. The multifunctional compound valve according to any one of claims 1 to 6, characterized in that the handle structure (7) comprises a handle (71) and a valve rod (72), one end of the valve rod (72) is inserted into the compound valve body (1) and connected with the valve core (2), and the other end of the valve rod extends out of the compound valve body (1) and is connected with the handle (71).

8. A multifunctional combination valve according to claim 7, characterized in that the combination valve body (1) is provided with a second limiting structure (9) for limiting the rotation angle of the handle structure (7), and the second limiting structure (9) is located at a position close to the holding end of the handle structure (7).

9. The multifunctional combination valve of claim 1, characterized in that a positioning rod (21) is rotatably inserted into the combination valve body (1), and the positioning rod (21) is connected with the valve core (2).

10. The multifunctional combination valve according to claim 9, characterized in that a wear-resistant sleeve (22) is arranged between the positioning rod (21) and the valve core (2).