CN117231774A - Metal seal ball valve - Google Patents
Metal seal ball valve Download PDFInfo
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- CN117231774A CN117231774A CN202311470745.XA CN202311470745A CN117231774A CN 117231774 A CN117231774 A CN 117231774A CN 202311470745 A CN202311470745 A CN 202311470745A CN 117231774 A CN117231774 A CN 117231774A
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- 239000002184 metal Substances 0.000 title claims abstract description 102
- 238000007789 sealing Methods 0.000 claims abstract description 76
- 238000009434 installation Methods 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 210000004907 gland Anatomy 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003754 machining Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The invention belongs to the field of ball valves, and particularly relates to a metal seal ball valve, which comprises a main valve body, a side valve body and a ball body; the valve seat is characterized in that a metal valve seat is arranged between the ball body and the main valve body and between the ball body and the side valve body, the metal valve seat comprises a first cylindrical section, a second cylindrical section and a third cylindrical section which are sequentially arranged, the axial direction of the metal valve seat is followed, a thrust pad is arranged on the first cylindrical section, a sealing assembly is arranged on the second cylindrical section, an installation groove is formed in the outer peripheral surface of the third cylindrical section, and fireproof filler is arranged in the installation groove. The metal sealing ball valve is simple in structure, can effectively ensure the sealing performance of the ball valve, and reduces processing loss and manufacturing cost.
Description
Technical Field
The invention belongs to the field of ball valves, and particularly relates to a metal seal ball valve.
Background
In the normal-temperature metal hard sealing ball valve in the prior art, when an O-shaped sealing ring structure is adopted between a metal valve seat and a valve body for sealing, a spiral spring is arranged on the metal valve seat, and the spiral spring firstly pushes the metal valve seat to press towards a ball body so as to realize pre-tightening sealing; when the medium exists in the pipeline, the pressure of the medium pushes the O-shaped sealing ring again, so that the O-shaped sealing ring drives the metal valve seat to press towards the ball body, and self-sealing is realized.
However, in the above-mentioned metal hard seal ball valve, when a plurality of coil springs are provided, a pre-tightening force of the valve seat against the ball is easily caused to be excessively large, thereby locking the ball valve or increasing a torque required to open and close the ball valve. Meanwhile, the machining precision of the spring hole is high, otherwise, the deviation between the actual pretightening force and the design pretightening force of the spiral spring is easy to cause. Moreover, the metal valve seat is longer due to the arrangement mode, so that the cast steel valve body cannot be guaranteed to have enough wall thickness, and the structural strength is reduced.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide the metal sealing ball valve which is simple in structure, can effectively ensure the sealing performance of the ball valve and simultaneously reduces the processing loss and the manufacturing cost.
In order to achieve the above object, the present invention provides the following technical solutions:
the metal sealing ball valve comprises a main valve body, a side valve body and a ball body, wherein the right side of the main valve body is connected with the side valve body, and the ball body is arranged between the main valve body and the side valve body; the upper end and the lower end of the main valve body are respectively provided with a through hole, the valve rod is inserted into the main valve body from the upper end and then connected with the ball body, and the fixed shaft is inserted into the main valve body from the lower end and then connected with the ball body; the upper end of the valve rod is sequentially provided with a connecting disc and a gland, and the connecting disc and the gland are connected with the main valve body through fasteners; a metal valve seat is arranged between the ball body and the main valve body and between the ball body and the side valve body, the metal valve seat comprises a first cylindrical section, a second cylindrical section and a third cylindrical section which are sequentially arranged, a thrust pad is arranged on the first cylindrical section along the axial direction of the metal valve seat, a sealing assembly is arranged on the second cylindrical section, an installation groove is formed in the peripheral surface of the third cylindrical section, and fireproof filler is arranged in the installation groove; one end of the sealing component is abutted against the main valve body or the side valve body, and the other end of the sealing component is abutted against the third cylindrical section; one end of the thrust pad is abutted against the main valve body or the side valve body, and the other end of the thrust pad is abutted against the second cylindrical section.
Preferably, the sealing component is in an X shape and comprises a base part and four protruding parts uniformly arranged along the circumferential direction of the base part, wherein the protruding parts are composed of a first connecting section and a second connecting section, the peripheries of the first connecting section and the second connecting section are arc surfaces, and the two sections of arc surfaces are in smooth transition; the middle of each protruding part is provided with a groove, and an elastic piece with a U-shaped section is arranged between two adjacent protruding parts, wherein the elastic piece has a pretightening force which enables the two adjacent protruding parts to approach each other towards the middle.
Preferably, the length of the grooves starts from the first connecting section and extends to the base part, and the angle between two adjacent grooves is 85-95 degrees.
Preferably, the resilient member is arranged to extend from the second connection section to the first connection section, and the lowermost end of the resilient member does not exceed the base portion.
Preferably, a guide channel is provided in the base portion, the guide channel being adapted to communicate two of the grooves on a side remote from the ball.
Preferably, the cross section of the thrust pad is in a mountain shape, and comprises a main body part and first arms positioned at two sides of the main body part, wherein the first arms extend backwards to form a supporting part.
Preferably, a second arm is provided at a side of the middle part of the main body part facing the metal valve seat; in a first state, a gap exists between the second arm and the metal valve seat, and in a second state, the second arm abuts against the metal valve seat.
Preferably, the first arms on both sides of the main body part are inclined in a direction approaching to the second arms, and the outer sides of the first arms are inclined planes arranged in an inclined manner.
Preferably, an arc-shaped elastic groove is formed at the connection part of the main body part and the first arm, and a guide surface is further arranged on the first arm and intersects with the elastic groove.
Preferably, an adjustment spring is selectively mounted in the elastic groove, and the adjustment spring has an elastic force that deforms the first arm in a direction away from the second arm.
Compared with the prior art, the metal sealing ball valve provided by the invention has the following beneficial technical effects:
1. the elasticity of the second sealing component is utilized to push the metal valve seat to press the ball body, so that the problem that in the prior art, the pressure of the metal valve seat to press the ball body is overlarge due to the arrangement of the spiral spring is avoided, and the ball valve is locked or the torque required by opening and closing the ball valve is increased.
2. At valve body and metal disk seat cooperation department, even valve body and metal disk seat complex dimensional processing precision in length direction is not enough, even when dimensional error is great, can all adapt through readjusting the thickness of thrust pad to avoid reprocessing and scrapping the loss that valve body, metal disk seat brought, improved the economic nature.
3. In the existing metal sealing ball valve, the valve body of the soft sealing ball valve cannot be utilized due to overlong metal valve seat, but in the sealing structure adopted by the invention, the metal valve seat can be shortest, has a simple structure, and can be used for casting the valve body of the soft sealing ball valve. In addition, as the pre-tightening seal is realized without a spiral spring and a spring hole is not required to be processed, the product cost can be reduced and the economical efficiency is improved.
4. The second sealing assembly is provided with the X-shaped sealing ring with the base part and the protruding parts, the groove is arranged in the middle of each protruding part, and the elastic piece with the U-shaped section is arranged between the two adjacent protruding parts, so that the two adjacent protruding parts can shrink towards the center. Therefore, the pretightening force of the second sealing assembly along the axial direction of the metal valve seat and the sealing pressure along the radial direction of the metal valve seat are increased, and the tightness of the metal valve seat is improved.
5. By arranging the guide channel in the base part, the corresponding two protruding parts are elastically deformed towards two sides by utilizing the pressure of the medium, so that the pretightening force of the second sealing assembly along the axial direction of the metal valve seat and the sealing pressure along the radial direction of the metal valve seat can be improved.
6. Through setting up the thrust pad to including the main part and be located the first arm of main part both sides, set up the second arm in the side of main part middle part towards the metal disk seat, can compensate size error through adjusting the thickness of thrust pad, it is simple and convenient. And, by means of the second arm, the metal valve seat can be effectively prevented from being pressed further towards the second sealing assembly, so that the second sealing assembly is protected.
Drawings
FIG. 1 is a prior art metal seal ball valve;
FIG. 2 is a metal seal ball valve of the present invention;
FIG. 3 is an enlarged partial schematic view of FIG. 2;
FIG. 4 is an enlarged partial schematic view of a metal valve seat;
FIG. 5 is a schematic view of an embodiment of a seal assembly;
FIG. 6 is a partial schematic view of the seal assembly mounted on a metal valve seat;
FIG. 7 is a schematic diagram of one embodiment of a thrust pad.
Wherein the reference symbols in the figures have the following meanings:
1. a main valve body; 2. a side valve body; 3. a sphere; 4. a valve stem; 5. a fixed shaft; 6. a connecting disc; 7. a gland; 8. a metal valve seat; 81. a first seal assembly; 82. a coil spring; 83. a second seal assembly; 84. a thrust pad; 85. fireproof filler; 86. a first cylindrical section; 87. a second cylindrical section; 88. a third cylindrical section; 89. a metal sealing surface;
831. a base portion; 832. a protruding portion; 833. a first connection section; 834. a second connection section; 835. a groove; 836. an elastic member;
841. a main body portion; 842. a first arm; 843. a support part; 844. a second arm; 845. an inclined plane; 846. an elastic groove; 847. a guide surface; 848. and adjusting the spring plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the invention.
Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of some embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, under the condition of no conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, the terms "upper", "lower", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or an azimuth or a positional relationship conventionally put in use of the inventive product, or an azimuth or a positional relationship conventionally understood by those skilled in the art, such terms are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Referring to fig. 1, a metal seal ball valve of the prior art includes a main valve body 1, a side valve body 2, and a ball body 3. The right side of the main valve body 1 is connected with the side valve body 2, and the ball 3 is arranged between the main valve body 1 and the side valve body 2. The upper and lower both ends of main valve body 1 all are provided with the through-hole, and valve rod 4 inserts main valve body 1 from the upper end and then is connected with spheroid 3, and fixed axle 5 inserts main valve body 1 from the lower extreme and then is connected with spheroid 3. The upper end of the valve rod 4 is sequentially provided with a connecting disc 6 and a gland 7, and the connecting disc 6 and the gland 7 are connected with the main valve body 1 through fasteners. A metal valve seat 8 is arranged between the ball body 3 and the main valve body 1 and between the ball body 3 and the side valve body 2, and a first sealing component 81 is arranged on the outer peripheral surface of the metal valve seat 8, wherein the first sealing component 81 is an O-shaped sealing ring and is used for realizing self-sealing between the metal valve seat 8 and the ball body 3. A spring hole is formed along the axial direction of the metal valve seat 8, and a spiral spring 82 is arranged in the spring hole, one end of the spiral spring is abutted against the metal valve seat 8, and the other end of the spiral spring is abutted against the main valve body 1 or the side valve body 2, so that the pre-tightening seal between the metal valve seat 8 and the ball body 3 is realized. The portion of the metal valve seat 8 in contact with the ball 3 is provided with a metal sealing surface 89, and the metal sealing surface 89 is subjected to cemented carbide treatment to improve the sealing performance between the metal valve seat 8 and the ball 3.
As mentioned above, the O-shaped sealing ring and the spiral spring are used for realizing the sealing between the metal valve seat and the ball body in the prior art, and the technical problems of overlarge pretightening force of the valve seat to the ball body exist. In order to solve the above technical problems, as shown in fig. 2-7, in the metal sealing ball valve provided by the invention, the metal valve seat 8 comprises a first cylindrical section 86, a second cylindrical section 87 and a third cylindrical section 88 which are sequentially arranged, a thrust pad 84 is installed on the first cylindrical section 86, a second sealing component 83 is installed on the second cylindrical section 87, an installation groove is arranged on the outer circumferential surface of the third cylindrical section 88, and a fireproof filler is arranged in the installation groove. The second seal member 83 has one end abutting against the main valve body 1 or the side valve body 2 and the other end abutting against the third cylindrical section 88, and the thrust pad 84 has one end abutting against the main valve body 1 or the side valve body 2 and the other end abutting against the second cylindrical section 87. Wherein the second sealing component 83 is an O-ring.
In the above structure, by providing a metal valve seat on each of the upstream and downstream sides of the ball, an O-ring is provided between the metal valve seat and the valve body. As the O-shaped sealing ring is made of rubber, the O-shaped sealing ring is good in elasticity, and the O-shaped sealing ring pushes the metal valve seat to the ball body by utilizing the elasticity of the O-shaped sealing ring as a spiral spring in the attached figure 1, so that the pre-tightening sealing is realized. When a medium exists in the pipeline, the pressure of the medium is utilized to push the O-shaped sealing ring again, so that the O-shaped sealing ring drives the metal valve seat to press towards the ball body to realize self sealing. The problem that in the prior art, the pressure of the metal valve seat to the ball body is too high due to the arrangement of the spiral spring is avoided, so that the ball valve is locked or the torque required for opening and closing the ball valve is increased.
Meanwhile, by arranging the thrust pad between the metal valve seat and the valve body, after the downstream metal valve seat presses against the O-shaped sealing ring and exceeds allowable deformation of the O-shaped sealing ring, the thrust pad arranged behind the downstream metal valve seat can prevent the metal valve seat from further pressing against the O-shaped sealing ring, so that the O-shaped sealing ring can be protected. In addition, when the machining precision of the valve body and the metal valve seat in the length direction is insufficient or the dimension is deviated, the dimension error can be compensated by adjusting the thickness of the thrust pad.
Preferably, referring to fig. 5 to 6, the second sealing assembly 83 is of an X-shape, and includes a base portion 831 and four protruding portions 832 uniformly arranged along the circumference of the base portion 831, the protruding portions 832 are composed of a first connecting section 833 and a second connecting section 834, the outer circumferences of the first connecting section 833 and the second connecting section 834 are arc surfaces, and smooth transition is achieved between the two arc surfaces; a groove 835 is formed in the middle of each protruding portion 832, and an elastic member 836 with a U-shaped cross section is disposed between two adjacent protruding portions 832, wherein the elastic member 836 has a pre-tightening force F that contracts toward the center, so that the two adjacent protruding portions 832 can be drawn toward the middle.
The O-shaped sealing ring can push the metal valve seat to the ball body, but the pretightening force can be provided is small, and effective pretightening sealing cannot be realized. In a preferred embodiment, the second seal assembly is provided as an X-shaped seal ring having a base portion and a projection, with a groove provided in the middle of each projection, and an elastic member having a U-shaped cross section provided between adjacent two projections, so that the adjacent two projections can contract toward the center. Therefore, the pretightening force of the second sealing assembly along the axial direction of the metal valve seat and the sealing pressure along the radial direction of the metal valve seat are increased, and the tightness of the metal valve seat is improved.
Preferably, the grooves 835 have a length starting from the first connecting section 833 and extending to the base portion 831, and an angle between two adjacent grooves 835 is 85 degrees to 95 degrees, such that the four grooves 835 are substantially perpendicular to each other. The elastic member 836 is disposed to extend from the second connecting section 834 to the first connecting section 833, and a bottommost end of the elastic member 836 does not exceed the base portion 831. According to the preferred embodiment, the protruding part can provide sufficient elastic deformation and structural strength so as to ensure that the second sealing assembly has sufficient pretightening force and sealing pressure and improve the tightness of the metal valve seat.
Preferably, a guide channel is provided in the base portion 831, which guide channel serves to connect the two recesses 835 on the side remote from the ball 3. As shown in fig. 6, when a medium is present in the pipe, the medium will flow along the gap between the valve body and the metal valve seat into the first recess 835 located at the left lower side of the ball 3, and after passing through the guide passage provided in the base portion 831, flow out from the second recess 835 located at the left upper side of the ball 3. Under the pressure action of the medium, the two protruding parts 832 far away from one side of the sphere 3 are elastically deformed to two sides, so that the pretightening force of the second sealing assembly along the axial direction of the metal valve seat and the sealing pressure along the radial direction of the metal valve seat can be improved. Of course, the guiding channel can also be used to connect the four grooves 835 formed on the second sealing component 83, so that under the pressure of the medium, the four protruding portions 832 are elastically deformed to two sides, and the pretightening force and sealing pressure can be further improved.
Preferably, referring to fig. 3 and 7, the thrust pad 84 has a cross-sectional shape of a "mountain" shape, and includes a main body portion 841 and first arms 842 located on both sides of the main body portion 841, the first arms 842 extending rearward to form a support portion 843, the first arms 842 abutting against the metal valve seat 8, and the support portion 843 abutting against the main valve body 1 or the side valve body 2. A second arm 844 is provided on a side of the middle of the main body portion 841 facing the metal valve seat 8, and in a first state, a gap exists between the second arm 844 and the metal valve seat 8, and in a second state, the second arm 844 abuts against the metal valve seat 8. The first arm 842 on both sides of the main body 841 is inclined in a direction approaching the second arm 844, the outer side of the main body 841 is inclined with an inclined plane 845, an arc-shaped elastic groove 846 is arranged at the joint of the main body 841 and the first arm 842, a guiding surface 847 is further arranged on the first arm 842, the guiding surface 847 intersects with the elastic groove 846, an adjusting elastic piece 848 is selectively arranged in the elastic groove 846, and the adjusting elastic piece 848 has an elastic force for deforming the first arm 842 in a direction far away from the second arm 844.
When the machining dimensions of the valve body and the metal valve seat in the longitudinal direction are deviated so that the actual space for mounting the thrust pad is smaller than the design space, the first arm 842 of the thrust pad 84 is inclined in a direction approaching the second arm 844, and has a certain elasticity, so that the first arm 842 can be deformed in a direction approaching the second arm 844, thereby compensating for the dimensional errors. On the contrary, when the actual space for installing the thrust pad is larger than the design space, the adjustment elastic piece 848 may be installed in the elastic groove 846, and the adjustment elastic piece 848 may deform the first arm 842 in a direction away from the second arm 844, so that the above-mentioned dimensional error may be compensated. Therefore, the size error is not compensated by adjusting the thickness of the thrust pad, and the thrust pad is simple and convenient.
Meanwhile, when the downstream side second seal assembly is in a normal sealing state, the first arm 842 abuts against the metal valve seat 8, and the support portion 843 abuts against the side valve body 2 (i.e., the first state). When the second sealing assembly is deformed beyond the allowable deformation, the first arm 842 deforms in a direction approaching the second arm 844, so that the second arm 844 abuts the metal valve seat 8 (i.e., the second state), and the thrust pad 84 can effectively prevent the metal valve seat from being pressed further towards the second sealing assembly, so as to protect the second sealing assembly.
The above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present invention; all technical solutions and modifications thereof that do not depart from the spirit and scope of the invention are intended to be included in the scope of the appended claims.
Claims (10)
1. A metal seal ball valve, characterized in that: the metal sealing ball valve comprises a main valve body, a side valve body and a ball body, wherein the right side of the main valve body is connected with the side valve body, and the ball body is arranged between the main valve body and the side valve body; the upper end and the lower end of the main valve body are respectively provided with a through hole, the valve rod is inserted into the main valve body from the upper end and then connected with the ball body, and the fixed shaft is inserted into the main valve body from the lower end and then connected with the ball body; the upper end of the valve rod is sequentially provided with a connecting disc and a gland, and the connecting disc and the gland are connected with the main valve body through fasteners; a metal valve seat is arranged between the ball body and the main valve body and between the ball body and the side valve body, the metal valve seat comprises a first cylindrical section, a second cylindrical section and a third cylindrical section which are sequentially arranged, a thrust pad is arranged on the first cylindrical section along the axial direction of the metal valve seat, a sealing assembly is arranged on the second cylindrical section, an installation groove is formed in the peripheral surface of the third cylindrical section, and fireproof filler is arranged in the installation groove; one end of the sealing component is abutted against the main valve body or the side valve body, and the other end of the sealing component is abutted against the third cylindrical section; one end of the thrust pad is abutted against the main valve body or the side valve body, and the other end of the thrust pad is abutted against the second cylindrical section.
2. The metal seal ball valve of claim 1, wherein: the sealing component is of an X shape and comprises a basic part and four protruding parts uniformly arranged along the circumferential direction of the basic part, wherein each protruding part consists of a first connecting section and a second connecting section, the peripheries of the first connecting section and the second connecting section are arc surfaces, and the two sections of the arc surfaces are in smooth transition; the middle of each protruding part is provided with a groove, and an elastic piece with a U-shaped section is arranged between two adjacent protruding parts, wherein the elastic piece has a pretightening force which enables the two adjacent protruding parts to approach each other towards the middle.
3. The metal seal ball valve of claim 2, wherein: the length of the grooves starts from the first connecting section and extends to the base part, and the angle between two adjacent grooves is 85-95 degrees.
4. The metal seal ball valve of claim 3, wherein: the elastic member is arranged to extend from the second connecting section to the first connecting section, and the bottommost end of the elastic member does not exceed the base portion.
5. The metal seal ball valve according to any one of claims 2-4, wherein: a guide channel is formed in the base part and is used for communicating the two grooves on one side far away from the sphere.
6. The metal seal ball valve of claim 5, wherein: the cross section of the thrust pad is in a mountain shape, and the thrust pad comprises a main body part and first arms positioned on two sides of the main body part, wherein the first arms extend backwards to form a supporting part.
7. The metal seal ball valve according to claim 6, wherein: a second arm is arranged on one side of the middle part of the main body part facing the metal valve seat; in a first state, a gap exists between the second arm and the metal valve seat, and in a second state, the second arm abuts against the metal valve seat.
8. The metal seal ball valve according to claim 7, wherein: the first arms on two sides of the main body part are obliquely arranged in a direction approaching to the second arms, and the outer sides of the first arms are inclined planes which are obliquely arranged.
9. The metal seal ball valve of claim 8, wherein: the connecting part of the main body part and the first arm is provided with an arc-shaped elastic groove, the first arm is also provided with a guide surface, and the guide surface is intersected with the elastic groove.
10. The metal seal ball valve of claim 9, wherein: an adjusting spring piece is arranged in the elastic groove, and the adjusting spring piece has elastic force which enables the first arm to deform in a direction away from the second arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311470745.XA CN117231774B (en) | 2023-11-07 | 2023-11-07 | Metal seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311470745.XA CN117231774B (en) | 2023-11-07 | 2023-11-07 | Metal seal ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117231774A true CN117231774A (en) | 2023-12-15 |
| CN117231774B CN117231774B (en) | 2024-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311470745.XA Active CN117231774B (en) | 2023-11-07 | 2023-11-07 | Metal seal ball valve |
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| Country | Link |
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| CN (1) | CN117231774B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117905904A (en) * | 2024-03-19 | 2024-04-19 | 成都成高阀门股份有限公司 | High-temperature wear-resistant and scouring-resistant ball valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117905904A (en) * | 2024-03-19 | 2024-04-19 | 成都成高阀门股份有限公司 | High-temperature wear-resistant and scouring-resistant ball valve |
| CN117905904B (en) * | 2024-03-19 | 2024-05-14 | 成都成高阀门股份有限公司 | High-temperature wear-resistant and scouring-resistant ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117231774B (en) | 2024-01-23 |
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