CN110608307B - Gate valve body and manufacturing method thereof - Google Patents
Gate valve body and manufacturing method thereof Download PDFInfo
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- CN110608307B CN110608307B CN201810613854.5A CN201810613854A CN110608307B CN 110608307 B CN110608307 B CN 110608307B CN 201810613854 A CN201810613854 A CN 201810613854A CN 110608307 B CN110608307 B CN 110608307B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a gate valve body and a manufacturing method thereof, wherein the gate valve body comprises an upper valve body, a middle valve body and a lower valve body which are sequentially connected; the middle valve body comprises a rectangular box body, an inlet flange and an outlet flange; the upper valve body comprises a pair of upper valve body front panels which are oppositely arranged, a pair of upper valve body side plates and a top plate which are oppositely arranged, the other end of the cylindrical structure of the upper valve body is provided with a bottom opening, and the bottom opening is communicated with the upper opening of the middle valve body; the lower valve body comprises a pair of lower valve body front panels arranged oppositely, a pair of lower valve body side plates and a bottom plate arranged oppositely, the other end of the cylindrical structure of the lower valve body is provided with a top opening, and the top opening is communicated with the lower opening of the middle valve body; the middle valve body is utilized to bear the force and the torque applied to the valve body by the pipeline, the upper valve body and the lower valve body only bear the pressure of a process medium, the strength of the valve body is obviously improved, the maximum stress borne by the valve body can be reduced, the valve body is prevented from generating large deformation under the action of the stress of the pipeline, the reliability of the gate valve is improved, and the processing difficulty is reduced.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a load-resistant gate valve body and a manufacturing method thereof.
Background
The gate valve is widely applied to various industries, and the valve body of the integrated gate valve mainly comprises an integrally welded valve body and an integrally cast valve body.
The defects of the existing integrally welded valve body mainly lie in that:
a) the valve body is deformed greatly due to pipeline stress during online operation, when the valve is online, the pipeline where the valve is located is restrained to the valve by 6 degrees of freedom, and the valve body is of a rectangular cross-section structure formed by welding steel plates, so that the rigidity and the strength are insufficient, the valve body is deformed greatly under the action of external load, and the service performance of the valve is influenced;
b) the welding position of the valve body and the valve body reinforcing rib plate can not be reinforced and smoothly transited, and when the valve body operates on line, stress concentration is generated at the welding position after the valve body is subjected to pipeline stress, so that a welding line is damaged, and the function of reinforcing the strength and the rigidity of the valve body can not be realized;
c) when the large-caliber valve body is integrally welded and formed, the thickness, length and width of the plate are large, and the welding deformation is difficult to ensure;
d) after the valve body is welded and formed, the valve body needs to be subjected to integral heat treatment, heat treatment equipment needed by the large-caliber valve body is also large, the requirement on the capacity of processing equipment is high, and the production difficulty and the production cost are high.
The defects of the prior integrally cast valve body mainly lie in that:
a) the integrally cast valve body has heavy weight and high requirement on the production capacity of a large valve body casting plant;
b) the large integral valve body has high casting difficulty and is easy to have the defects of looseness and the like;
c) the large-scale integral valve body casting mold is complex and easy to deform, and has the defects of more risers, more waste and high manufacturing cost which are required to be arranged for ensuring the casting molding of the valve body;
d) the processing of large-scale integral valve body castings requires large equipment.
Therefore, development of a gate valve body having higher strength, less likely to cause large deformation, and less difficult to manufacture has been desired.
Disclosure of Invention
The invention provides a gate valve body and a manufacturing method thereof, which can solve the problem that the existing valve is easily deformed greatly under the influence of the stress of a pipeline where the existing valve is located.
The invention provides a gate valve body, which comprises an upper valve body, a middle valve body and a lower valve body which are connected in sequence;
the middle valve body comprises a rectangular box body, an inlet flange and an outlet flange, the inlet flange and the outlet flange are respectively arranged on two opposite side surfaces of the rectangular box body, so that a gate valve channel is formed together with the rectangular box body, and an upper opening and a lower opening are respectively arranged on two side surfaces, perpendicular to the inlet flange and the outlet flange, of the rectangular box body;
the upper valve body comprises a pair of upper valve body front panels, a pair of upper valve body side plates and a top plate, wherein the upper valve body front panels are oppositely arranged, the upper valve body side plates are oppositely arranged, the upper valve body front panels and the upper valve body side plates are spliced to form a cylindrical structure, the top plate is arranged at one end of the cylindrical structure of the upper valve body, a bottom opening is formed in the other end of the cylindrical structure of the upper valve body, and the bottom opening is communicated with the upper opening of the middle valve body;
the lower valve body comprises a pair of lower valve body front panels, a pair of lower valve body side plates and a bottom plate, wherein the lower valve body front panels are oppositely arranged, the lower valve body side plates are oppositely arranged, the lower valve body front panels and the lower valve body side plates are spliced to form a cylindrical structure, the bottom plate is arranged at one end of the cylindrical structure of the lower valve body, the other end of the cylindrical structure of the lower valve body is provided with a top opening, and the top opening is communicated with the lower opening of the middle valve body.
Preferably, the gate valve body further comprises:
the upper flange is arranged at an upper opening of the middle valve body;
the lower flange is arranged at the lower opening of the middle valve body;
the bottom connecting flange is arranged at a bottom opening of the upper valve body;
the top connecting flange is arranged at a top opening of the lower valve body;
the upper flange is connected with the bottom connecting flange through a first stud and a first nut, and the lower flange is connected with the top connecting flange through a second stud and a second nut.
Preferably, the inlet flange, the outlet flange, the upper flange and the lower flange are integrally formed with the rectangular box body.
Preferably, the corners of the rectangular box body are rounded.
Preferably, the side surfaces of the inlet flange and the outlet flange are provided with a longitudinal rib plate and a transverse rib plate which are perpendicular to each other, and two side surfaces of the rectangular box body which are not provided with the flange and the opening are provided with a lateral rib plate which is parallel to the transverse rib plate.
Preferably, the longitudinal rib plates are perpendicular to the upper flange and the lower flange, and the transverse rib plates are parallel to the upper flange and the lower flange.
Preferably, the longitudinal rib plate and the transverse rib plate are welded with the middle valve body, or the longitudinal rib plate and the transverse rib plate are integrally formed with the middle valve body through casting.
Preferably, reinforcing rib plates are arranged on the upper valve body front panel, the upper valve body side plate, the lower valve body front panel and the lower valve body side plate.
Preferably, the upper valve body is welded with the rectangular box body, and the lower valve body is welded with the rectangular box body.
Another aspect of the present invention provides a method for manufacturing a gate valve body, including:
casting the middle valve body;
respectively assembling the upper valve body and the lower valve body;
connecting the upper and lower valve bodies to the middle valve body, respectively
The invention has the beneficial effects that:
1. the middle valve body is utilized to bear the force and the torque applied to the valve body by the pipeline, the upper valve body and the lower valve body only bear the pressure of a process medium, the middle valve body, the upper valve body and the lower valve body are combined to form the load-resisting gate valve body with a three-section structure, the strength of the valve body is obviously improved, the maximum stress borne by the valve body can be reduced, the valve body is prevented from generating large deformation under the action of stress of the pipeline, the reliability of the gate valve is improved, and meanwhile, the processing difficulty is reduced.
2. The middle valve body, the flange and the reinforcing rib plate are integrally formed and manufactured, so that the load resistance of the valve body is improved, and the valve can resist larger external load when in on-line operation.
The apparatus and methods of the present invention have other features and advantages which will be apparent from or are set forth in detail in the accompanying drawings and the following detailed description, which are incorporated herein, and which together serve to explain certain principles of the invention.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts.
Fig. 1 is an exploded schematic view of the entire structure of a gate valve body according to a first exemplary embodiment of the present invention;
fig. 2a and 2b are a front view and a partial sectional view, respectively, of a middle valve body of a gate valve body according to a first exemplary embodiment of the present invention;
fig. 3a and 3b are schematic views illustrating the connection of the upper and lower bodies and the middle body of the gate valve body according to the first and second exemplary embodiments of the present invention, respectively.
Description of reference numerals:
1-middle valve body, 2-upper valve body, 3-lower valve body, 111-upper flange, 112-lower flange, 121-inlet flange, 122-outlet flange, 131-middle valve body front panel, 132-middle valve body side panel, 141-longitudinal rib plate, 142-transverse rib plate, 143-lateral rib plate, 21-bottom connecting flange, 221-upper valve body front panel, 222-upper valve body side panel, 231-transverse rib plate, 232-lateral rib plate, 24-top panel, 25-packing cavity, 26-reinforcing rib, 27-adapter flange, 31-top connecting flange, 321-lower valve body side panel, 322-lower valve body front panel, 331-transverse rib plate, 332-lateral rib plate, 333-longitudinal rib plate, 34-bottom panel, 35-bottom flange, 41-shim, 42-shim, 51-stud, 52-nut.
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The gate valve body comprises an upper valve body, a middle valve body and a lower valve body which are sequentially connected;
the middle valve body comprises a rectangular box body, an inlet flange and an outlet flange, the inlet flange and the outlet flange are respectively arranged on two opposite side surfaces of the rectangular box body, so that a gate valve channel is formed together with the rectangular box body, and an upper opening and a lower opening are respectively arranged on two side surfaces, perpendicular to the inlet flange and the outlet flange, of the rectangular box body;
the upper valve body comprises a pair of upper valve body front panels, a pair of upper valve body side plates and a top plate, wherein the upper valve body front panels are oppositely arranged, the upper valve body side plates are oppositely arranged, the upper valve body front panels and the upper valve body side plates are spliced to form a cylindrical structure, the top plate is arranged at one end of the cylindrical structure of the upper valve body, the other end of the cylindrical structure of the upper valve body is provided with a bottom opening, and the bottom opening is communicated with the upper opening of the middle valve body;
the lower valve body comprises a pair of lower valve body front panels, a pair of lower valve body side plates and a bottom plate, wherein the lower valve body front panels are oppositely arranged, the lower valve body side plates are oppositely arranged, the lower valve body front panels and the lower valve body side plates are spliced to form a tubular structure, the bottom plate is arranged at one end of the tubular structure of the lower valve body, a top opening is formed in the other end of the tubular structure of the lower valve body, and the top opening is communicated with the lower opening of the middle valve body.
According to the gate valve body provided by the embodiment of the invention, the middle valve body is utilized to bear the force and torque applied to the valve body by a pipeline, the upper valve body and the lower valve body only bear the pressure of a process medium, the middle valve body, the upper valve body and the lower valve body are combined to form the load-resistant gate valve body with a three-section structure, the strength of the valve body is obviously improved, the maximum stress borne by the valve body can be reduced, the valve body is prevented from generating large deformation under the action of stress of the pipeline, the reliability of the gate valve is improved, and the processing difficulty is reduced.
In one example, the gate valve body further comprises:
the upper flange is arranged at the upper opening of the middle valve body;
the lower flange is arranged at the lower opening of the middle valve body;
the bottom connecting flange is arranged at a bottom opening of the upper valve body;
the top connecting flange is arranged at a top opening of the lower valve body;
the upper flange is connected with the bottom connecting flange through a first stud and a first nut, and the lower flange is connected with the top connecting flange through a second stud and a second nut.
The flanges are respectively arranged at the connecting positions of the upper valve body, the middle valve body and the lower valve body, and the upper valve body, the middle valve body and the lower valve body can be sequentially connected through the studs and the nuts, so that the assembly is convenient. Or the upper valve body can be welded with the rectangular box body, the lower valve body can be welded with the rectangular box body, and the valve body, the middle valve body and the lower valve body can be connected in sequence.
In one example, the inlet and outlet flanges are circular flanges, the upper and lower flanges are rectangular flanges, and the top and bottom connecting flanges are also rectangular flanges.
In one example, the inlet flange, the outlet flange, the upper flange, and the lower flange are all integrally formed with the rectangular box. Preferably, the inlet flange, the outlet flange, the upper flange, the lower flange and the rectangular box body are integrally formed through casting. Each flange and rectangle box integrated into one piece are favorable to reducing the processing degree of difficulty and processing cost.
In one example, the corners of the rectangular box are rounded. In particular, the corners of the rectangular box are cast fillets. The fillet can effectively avoid stress concentration, improves the anti-load capacity of valve body.
In one example, the side surfaces of the inlet flange and the outlet flange are provided with a longitudinal rib plate and a transverse rib plate which are perpendicular to each other, and two side surfaces of the rectangular box body, which are not provided with the flange and the opening, are provided with lateral rib plates which are parallel to the transverse rib plates. In particular, the longitudinal rib plates are perpendicular to the upper flange and the lower flange, and the transverse rib plates are parallel to the upper flange and the lower flange. More preferably, the longitudinal rib plates, the transverse rib plates and the lateral rib plates on each side face form a square frame structure.
Through setting up vertical gusset, horizontal gusset and side direction gusset, can strengthen import flange, outlet flange, upper flange, lower flange and rectangle box as an organic whole, the overall structure of well valve body obtains strengthening, is favorable to directly transmitting pressure and the moment of torsion that the installation pipeline loaded on the valve body.
In one example, the longitudinal rib plate and the transverse rib plate are welded with the middle valve body, or the longitudinal rib plate and the transverse rib plate are integrally formed with the middle valve body through casting. More preferably, the joints of the longitudinal rib plates and the transverse rib plates with the rectangular box body, the inlet flange, the outlet flange, the upper flange and the lower flange are in smooth transition, so that the stress concentration at the joints is reduced, and the condition that the valve body fails due to large external load is avoided.
In one example, the upper valve body front panel, the upper valve body side plate, the lower valve body front panel and the lower valve body side plate are all provided with reinforcing rib plates so as to improve the overall strength of the upper valve body and the lower valve body.
The embodiment of the invention also provides a manufacturing method of the gate valve body, which comprises the following steps:
casting the middle valve body;
respectively assembling the upper valve body and the lower valve body;
and respectively connecting the upper valve body and the lower valve body to the middle valve body.
Example 1
Fig. 1 is an exploded view illustrating the overall structure of a gate valve body according to a first exemplary embodiment of the present invention, fig. 2a and 2b are a front view and a partial sectional view illustrating a middle valve body of the gate valve body according to the first exemplary embodiment of the present invention, respectively, and fig. 3a is a schematic view illustrating the connection of upper and lower valve bodies and the middle valve body of the gate valve body according to the first exemplary embodiment of the present invention.
As shown in the above drawings, a gate valve body according to an exemplary embodiment of the present invention includes an upper valve body 2, a middle valve body 1, and a lower valve body 3, which are connected in sequence;
the middle valve body 1 comprises a rectangular box body, an inlet flange 121, an outlet flange 122, an upper flange 111 and a lower flange 112, wherein the inlet flange 121 and the outlet flange 122 are respectively arranged on two opposite side surfaces of the rectangular box body, so that a gate valve channel is formed together with the rectangular box body, an upper opening hole and a lower opening hole are respectively arranged on two side surfaces of the rectangular box body, which are perpendicular to the inlet flange 121 and the outlet flange 122, and the upper flange 111 and the lower flange 112 are respectively arranged on the upper opening hole and the lower opening hole;
the upper valve body 2 comprises a pair of upper valve body front panels 221, a pair of upper valve body side plates 222, a top plate 24 and a bottom connecting flange 21, wherein the upper valve body front panels 221 and the upper valve body side plates 222 are oppositely arranged, the upper valve body front panels 221 and the upper valve body side plates 222 are spliced to form a cylindrical structure, the top plate 24 is arranged at one end of the cylindrical structure, a bottom opening is formed in the other end of the cylindrical structure, the bottom opening is communicated with the upper opening of the middle valve body, the bottom connecting flange 21 is arranged at the bottom opening, and the bottom connecting flange 21 is connected with the upper flange 111 through a stud 51, a nut 52 and a gasket 41;
the lower valve body 3 comprises a pair of lower valve body front panels 322 which are oppositely arranged, a pair of lower valve body side plates 321 which are oppositely arranged, a bottom plate 34 and a top connecting flange 31, the pair of lower valve body front panels 322 and the pair of lower valve body side plates 321 are spliced to form a cylindrical structure, the bottom plate 34 is arranged at one end of the cylindrical structure, a top opening is formed in the other end of the cylindrical structure, the top opening is communicated with a lower opening of the middle valve body, the top connecting flange 31 is arranged at the top opening, and the top connecting flange 31 is connected with the lower flange 112 through a stud 51, a nut 52 and a gasket 42.
The side surfaces (namely the middle valve body front panel 131) where the inlet flange 121 and the outlet flange 122 are located are provided with a plurality of longitudinal rib plates 141 and transverse rib plates 142 which are perpendicular to each other, the longitudinal rib plates 141 are perpendicular to the upper flange 111 and the lower flange 112, the transverse rib plates 142 are parallel to the upper flange 111 and the lower flange 112, and the two side surfaces (namely the middle valve body side panel 132) where the rectangular box body is not provided with the flanges are provided with lateral rib plates 143. The longitudinal rib plate 141, the transverse rib plate 142 and the lateral rib plate 143 form a square frame structure, and the rectangular box body is reinforced into a whole.
A transverse rib plate 231 is arranged on the upper valve body front panel 221, and a lateral rib plate 232 is arranged on the upper valve body side plate 222 so as to ensure the integral strength of the upper valve body. The top plate 24 is provided with a round hole which is communicated with the packing cavity 25, the packing cavity 25 is connected to the top plate 24 through a reinforcing rib 26, and the top of the packing cavity 25 is provided with a switching flange 27. The packing chamber 25 serves as a packing for mounting the valve stem to the valve body and the adapter flange 27 serves as an adapter for connecting the valve body to the support.
The lower valve body front panel 322 is provided with a transverse rib plate 331, the lower valve body side panel 321 is provided with a lateral rib plate 332, and a longitudinal rib plate 333 is further arranged between the top connecting flange 31 and the lateral rib plate 332. By arranging the rib plates, the integral strength of the lower valve body can be ensured. Two round holes are arranged on the bottom plate 34, and the bottom flange 35 is arranged at the position of the round holes. The bottom flange 35 serves as a discharge port for foreign materials in the valve body.
The upper flange 111, the lower flange 112, the bottom connecting flange 21 and the top connecting flange 31 are all rectangular flanges. The top connecting flange 31 of the lower valve body 3 has a length (side in the vertical direction in fig. 1) greater than the bottom connecting flange 21 of the upper valve body 2, and thus can be used as a support for the gate valve body. Alternatively, the width (side perpendicular to the length) of the top connecting flange 31 of the lower valve body 3 may be set larger than the width of the bottom connecting flange 21 of the upper valve body 2, so that the gate valve body can be used as a support.
The top connecting flange 31 of the lower valve body 3 is used as a support of the gate valve body, the supporting position is close to the valve body channel, the load resisting capacity of the middle valve body can be effectively exerted, the distance between the gate valve body and the supporting contact surface is reduced, and the stability of valve support is effectively improved.
Wherein, the inlet flange 121, the outlet flange 122, the upper flange 111, the lower flange 112 are all formed integrally with the rectangular box body by casting, and the edges and corners of the rectangular box body are casting fillets so as to avoid stress concentration and improve the load resistance of the valve body. The longitudinal rib plate 141, the transverse rib plate 142 and the lateral rib plate 143 are integrally formed with the middle valve body 1 through casting, and the joints between the longitudinal rib plate 141 and the transverse rib plate 142 and the rectangular box body, the inlet flange 121, the outlet flange 122, the upper flange 111 and the lower flange 112 are all in smooth transition, so that stress concentration at the joints is reduced, and the condition that the valve body fails due to large external load is avoided.
In this embodiment, the upper valve body 2 and the lower valve body 3 are connected with the upper flange 111 and the lower flange 112 of the middle valve body 1 through the bottom connecting flange 21 and the top connecting flange 31, respectively, thereby forming a load-resisting gate valve body with a three-section structure, wherein the middle valve body bears the force and torque applied to the valve body by a pipeline, the upper valve body 2 and the lower valve body 3 only bear the pressure of a process medium, the strength of the valve body is obviously improved, the maximum stress borne by the valve body can be reduced, thereby avoiding the valve body from generating large deformation under the action of the stress of the pipeline, and improving the reliability of the gate valve.
The manufacturing method of the gate valve body comprises the following steps:
casting a middle valve body, wherein the inlet flange 121, the outlet flange 122, the upper flange 111, the lower flange 112, the longitudinal rib plate 141, the transverse rib plate 142 and the lateral rib plates are integrally formed with the rectangular box body, casting fillets are formed at corners of the rectangular box body, and smooth transition is formed at the connecting positions of the longitudinal rib plate 141 and the transverse rib plate 142 between the rectangular box body and each flange;
assembling an upper valve body and a lower valve body;
and connecting the assembled upper valve body and the assembled lower valve body to the middle valve body through a stud, a nut and a gasket.
Example 2
Fig. 3b is a schematic view of the connection of the upper and lower bodies and the middle body of a gate valve body according to a second exemplary embodiment of the present invention.
The second exemplary embodiment of the present invention differs from the first embodiment in that the middle valve body is not provided with an upper flange and a lower flange, the upper valve body is not provided with a bottom connecting flange, the lower valve body is not provided with a top connecting flange, the upper valve body 2 is welded to the rectangular box body of the middle valve body 1, and the lower valve body 3 is welded to the rectangular box body of the middle valve body 1, as shown in fig. 3 b.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (8)
1. A gate valve body is characterized by comprising an upper valve body, a middle valve body and a lower valve body which are connected in sequence;
the middle valve body comprises a rectangular box body, an inlet flange and an outlet flange, the inlet flange and the outlet flange are respectively arranged on two opposite side surfaces of the rectangular box body, so that a gate valve channel is formed together with the rectangular box body, and an upper opening and a lower opening are respectively arranged on two side surfaces, perpendicular to the inlet flange and the outlet flange, of the rectangular box body;
the upper valve body comprises a pair of upper valve body front panels, a pair of upper valve body side plates and a top plate, wherein the upper valve body front panels are oppositely arranged, the upper valve body side plates are oppositely arranged, the upper valve body front panels and the upper valve body side plates are spliced to form a cylindrical structure, the top plate is arranged at one end of the cylindrical structure of the upper valve body, a bottom opening is formed in the other end of the cylindrical structure of the upper valve body, and the bottom opening is communicated with the upper opening of the middle valve body;
the lower valve body comprises a pair of lower valve body front panels, a pair of lower valve body side plates and a bottom plate, wherein the pair of lower valve body front panels and the pair of lower valve body side plates are oppositely arranged, and are spliced to form a cylindrical structure;
the upper flange is arranged at an upper opening of the middle valve body;
the lower flange is arranged at the lower opening of the middle valve body;
the bottom connecting flange is arranged at a bottom opening of the upper valve body;
the top connecting flange is arranged at a top opening of the lower valve body;
the upper flange is connected with the bottom connecting flange through a first stud and a first nut, and the lower flange is connected with the top connecting flange through a second stud and a second nut;
the middle valve body is formed by casting;
the upper valve body is welded with the rectangular box body, and the lower valve body is welded with the rectangular box body;
the top plate is provided with a round hole, the round hole is communicated with the filler cavity, the filler cavity is connected to the top plate through a reinforcing rib, and the top of the filler cavity is provided with a switching flange;
the bottom plate is provided with two round holes, and the bottom flange is arranged at the position of the round hole;
the length of the top connecting flange of the lower valve body is larger than that of the bottom connecting flange of the upper valve body, or the width of the top connecting flange of the lower valve body is larger than that of the bottom connecting flange of the upper valve body.
2. The gate valve body of claim 1, wherein the inlet flange, the outlet flange, the upper flange, and the lower flange are integrally formed with the rectangular box.
3. The gate valve body of claim 1, wherein the corners of the rectangular box are rounded.
4. The gate valve body according to claim 1, wherein the side surface where the inlet flange and the outlet flange are located is provided with a longitudinal rib and a transverse rib which are perpendicular to each other, and two side surfaces of the rectangular box body where the flange and the opening are not provided are provided with lateral ribs which are parallel to the transverse ribs.
5. The gate valve body of claim 4, wherein the longitudinal webs are perpendicular to the upper and lower flanges and the transverse webs are parallel to the upper and lower flanges.
6. The gate valve body of claim 4, wherein the longitudinal rib and the transverse rib are welded to the middle valve body, or the longitudinal rib and the transverse rib are integrally formed with the middle valve body by casting.
7. The gate valve body of claim 1, wherein the upper valve body front panel, the upper valve body side plate, the lower valve body front panel and the lower valve body side plate are all provided with reinforcing rib plates.
8. The method of manufacturing a gate valve body according to any one of claims 1-7, comprising:
casting the middle valve body;
respectively assembling the upper valve body and the lower valve body;
and respectively connecting the upper valve body and the lower valve body to the middle valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810613854.5A CN110608307B (en) | 2018-06-14 | 2018-06-14 | Gate valve body and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810613854.5A CN110608307B (en) | 2018-06-14 | 2018-06-14 | Gate valve body and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110608307A CN110608307A (en) | 2019-12-24 |
| CN110608307B true CN110608307B (en) | 2022-02-22 |
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| CN201810613854.5A Active CN110608307B (en) | 2018-06-14 | 2018-06-14 | Gate valve body and manufacturing method thereof |
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| US3013770A (en) * | 1958-07-23 | 1961-12-19 | Acf Ind Inc | Fabricated valve body |
| US4588164A (en) * | 1983-05-11 | 1986-05-13 | Kemp Willard E | Through conduit gate valve |
| US4541453A (en) * | 1983-11-03 | 1985-09-17 | Conoco Inc. | High temperature slide valve |
| CN203670846U (en) * | 2014-01-16 | 2014-06-25 | 西安东新石油设备厂有限公司 | Flat gate valve with under-pressure replace valve rod and balance rod |
| CN104279346A (en) * | 2014-10-17 | 2015-01-14 | 洪泽东俊机械有限公司 | Low-torque highly-sealed ball screw plate valve |
| CN205190883U (en) * | 2015-10-29 | 2016-04-27 | 保一集团有限公司 | High pressure plate valve |
| CN205401781U (en) * | 2016-03-04 | 2016-07-27 | 苏州道森钻采设备股份有限公司 | Lead screw gate valve of variable rotational speed and torque |
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