CN214331546U - Top-mounted ultra-low temperature ball valve - Google Patents
Top-mounted ultra-low temperature ball valve Download PDFInfo
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- CN214331546U CN214331546U CN202023200442.0U CN202023200442U CN214331546U CN 214331546 U CN214331546 U CN 214331546U CN 202023200442 U CN202023200442 U CN 202023200442U CN 214331546 U CN214331546 U CN 214331546U
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Abstract
The utility model discloses a top-mounted ultralow temperature ball valve, wherein the top of the valve body is provided with an inspection platform, an inspection hole is arranged in the inspection platform, and a valve seat assembly is arranged inside the valve cavity and comprises a first valve seat corresponding to an upstream channel and a second valve seat corresponding to a downstream channel; the ball body is arranged in the valve cavity; the valve cover is arranged outside the valve body and covers the access hole; the valve rod is arranged in the valve cover in a penetrating way, one end of the valve rod is fixedly connected with the ball body, and the other end of the valve rod is connected with the actuator; the inner side of the maintenance platform is provided with a step protruding into the maintenance hole, and a round hole with the diameter larger than that of the ball body is formed in the step; the first valve seat and the second valve seat are provided with a circle of connecting walls inserted into the round holes, and the connecting walls are connected with the inner side faces of the steps through elastic pieces. The spheroid links firmly together with the valve rod, and the opening of manhole is greater than spheroidal diameter, and elastic connection between disk seat and the valve body can be taken out valve rod and spheroid together after demolising the valve gap so, and the installation and the dismantlement of top-mounted ball valve all become very simple and convenient.
Description
Technical Field
The utility model belongs to the technical field of the valve, a low temperature valve is related to, especially, relate to a top mounted formula ultra-low temperature ball valve.
Background
The top-mounted ultralow temperature ball valve is an important component of petrochemical industry, air separation and natural gas industry as an important opening/closing element in a low-temperature pipeline system. The top-mounted ultralow-temperature ball valve adopts a top-mounted structure, can realize online maintenance and is suitable for low-temperature liquid or gas media such as Liquefied Natural Gas (LNG), Liquefied Petroleum Gas (LPG), liquid hydrogen, liquid oxygen, ethylene and other conditions.
The top-mounted ball valve is simple and rapid to disassemble on a pipeline, and convenient and rapid to maintain. When the valve has a fault on the pipeline and needs to be repaired, the valve does not need to be disassembled from the pipeline, only the middle flange bolt and the nut need to be disassembled, the valve cover and the valve rod assembly are taken out of the valve body together, and then the ball body and the valve seat assembly are taken out, so that the ball body and the valve seat can be repaired on line.
However, the ball body and the valve rod in the existing top-mounted ball valve can not be taken out together, the ball body can be taken out only by means of an external tool, the installation of the ball body in the valve seat is also carried out by means of the tool, and the maintenance process of the ball valve is still complicated.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: how the ball can be removed together with the valve stem.
In order to achieve the above purpose, the utility model provides a technical scheme as follows:
a top-loading ultra-low temperature ball valve comprising:
the valve body is internally provided with a valve cavity, the top of the valve body is provided with an inspection platform, and an inspection hole communicated with the valve cavity is formed in the inspection platform; an upstream channel and a downstream channel which are communicated with the access hole are respectively arranged on two sides of the valve body;
the valve seat assembly is arranged in the valve cavity and comprises a first valve seat corresponding to the upstream channel and a second valve seat corresponding to the downstream channel, and through holes communicated with the upstream channel and the downstream channel are formed in the first valve seat and the second valve seat;
the ball body is arranged in the valve cavity and is arranged between the first valve seat and the second valve seat;
the valve cover is arranged outside the valve body, covers the access hole and is fixedly connected with the access platform through a bolt;
the valve rod is arranged in the valve cover in a penetrating way, one end of the valve rod is fixedly connected with the ball body, and the other end of the valve rod is connected with the actuator;
the inner side of the maintenance platform is provided with a step protruding into the maintenance hole, and a round hole with the diameter larger than that of the ball body is formed in the step; the first valve seat and the second valve seat are provided with a circle of connecting walls inserted into the round holes, and the connecting walls are connected with the inner side faces of the steps through elastic pieces.
Furthermore, a first step matched with the connecting wall of the first valve seat and the second valve seat is arranged in the valve body, and the connecting wall is connected with the inner side surface of the first step through an elastic piece.
Further, the elastic member is a spring.
Further, the spring is fixed in the connecting wall.
Further, an upper support ring inserted into the round hole is arranged on the inner side of the valve cover, and an upper insertion rod inserted into the upper support ring is arranged on the ball body.
Furthermore, an insertion hole is formed in the upper insertion rod, the valve rod is inserted into the insertion hole, and the valve rod is fixedly connected with the upper insertion rod through a transverse plug screw.
Furthermore, one end of the valve body, which is opposite to the valve rod, is provided with a lower support ring for supporting the ball body, and the ball body is provided with a lower inserted rod inserted into the lower support ring.
Further, a section of convex block with the diameter larger than that of the rod body is arranged in the valve rod, and a sealing adhesive layer is wrapped outside the convex block.
Compared with the prior art, the utility model discloses the beneficial effect who has is: the utility model discloses an among the top-mounted ball valve, the spheroid links firmly together with the valve rod, and the opening of manhole is greater than spheroidal diameter, and elastic connection between disk seat and the valve body can together take out the valve rod with the spheroid after so demolising the valve gap, and the installation and the dismantlement of top-mounted ball valve all become very simple and convenient.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.
Fig. 1 is a front view of a top-loading ultra-low temperature ball valve.
The reference numbers of this figure are:
10-valve body, 20-ball body, 30-valve cover, 40-valve rod, 50-maintenance platform, 51-maintenance hole, 60-upstream channel, 70-downstream channel, 80-first valve seat, 90-second valve seat, 31-upper support ring, 21-upper inserted link, 11-lower support ring, 22-lower inserted link and 41-lug.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Examples
Referring to fig. 1, a top-loading type ultra-low temperature ball valve includes a valve body 10, a valve seat assembly, a ball body 20, a valve cover 30 and a valve stem 40. The valve body 10 is internally provided with a valve cavity, the top of the valve body is provided with an inspection table 50, and an inspection hole 51 communicated with the valve cavity is formed in the inspection table 50; both sides of the valve body 10 are provided with an upstream passage 60 and a downstream passage 70, respectively, which communicate with the manhole 51. The valve seat assembly is arranged in the valve cavity and comprises a first valve seat 80 corresponding to the upstream channel 60 and a second valve seat 90 corresponding to the downstream channel 70, and through holes communicated with the upstream channel 60 and the downstream channel 70 are formed in the first valve seat 80 and the second valve seat 90. The ball 20 is disposed inside the valve chamber and between the first valve seat 80 and the second valve seat 90. The valve cover 30 is disposed outside the valve body 10, covers the access hole 51, and is fixedly connected to the access platform 50 through a bolt. The valve rod 40 is arranged in the valve cover 30 in a penetrating way, one end of the valve rod is fixedly connected with the ball body 20, and the other end of the valve rod is connected with the actuator. A section of convex block 41 with the diameter larger than that of the rod body is arranged in the valve rod 40, and the outside of the convex block is wrapped by a sealant layer. The inner side of the maintenance platform 50 is provided with a step 52 protruding into the maintenance hole 51, a round hole with the diameter larger than that of the ball 20 is formed in the step, and after the valve cover 30 is removed, the valve rod 40 is pulled upwards, so that the ball 20 can be pulled out from the maintenance hole 51. The first valve seat 80 and the second valve seat 90 are provided with a ring of connecting walls 100 inserted into the circular holes, and the connecting walls are connected with the inner side surfaces of the steps by elastic members, preferably springs, fixed in the connecting walls. Further, a first step 12 is provided inside the valve body 10 to be fitted to a connecting wall of the first valve seat 80 and the second valve seat 90, and the connecting wall is connected to an inner side surface of the first step through an elastic member. The first valve seat 80, the second valve seat 90 and the valve body 10 are elastically connected, the ball 20 is placed in the valve cavity to press the first valve seat 80 and the second valve seat 90 on the valve body 10, after the ball 20 is taken out, the force applied on the valve seats disappears, the connecting wall of the valve seats is exposed in the access hole 51, and a maintenance worker can smoothly take the valve seats out of the access hole 51.
The diameter of the access hole 51 is larger than that of the ball 20, the valve body 10 does not block the door for shielding the ball 20, in order to improve the stability of the ball 20 in the valve cavity, the inner side of the valve cover 30 of the present embodiment is provided with an upper support ring 31 inserted into the circular hole, the ball 20 is provided with an upper insert rod 21 inserted into the upper support ring, a lower support ring 11 for supporting the ball 20 is provided at one end of the valve body 10 opposite to the valve rod 40, and the ball 20 is provided with a lower insert rod 22 inserted into the lower support ring. The upper and lower support rings support and limit the ball 20, and after the valve cap 30 is screwed, the ball 20 is limited between the upper and lower support rings. The lower support ring can also rotationally support the ball body 20, so that the ball body 20 is prevented from shaking in the valve cavity, and the sealing performance of the valve is improved.
In this embodiment, the upper plug rod is provided with an insertion hole, the valve rod 40 is inserted into the insertion hole, the valve rod 40 is fixedly connected with the upper plug rod through a transverse plug screw, if the valve rod 40, the valve cover 30 and the ball body 20 are fixedly connected into a whole, and the valve cover 30 can be taken out together with the valve rod 40 and the ball body 20 when the valve cover 30 is taken out upwards.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A top-loading ultra-low temperature ball valve comprising:
the valve body is internally provided with a valve cavity, the top of the valve body is provided with an inspection platform, and an inspection hole communicated with the valve cavity is formed in the inspection platform; an upstream channel and a downstream channel which are communicated with the access hole are respectively arranged on two sides of the valve body;
the valve seat assembly is arranged in the valve cavity and comprises a first valve seat corresponding to the upstream channel and a second valve seat corresponding to the downstream channel, and through holes communicated with the upstream channel and the downstream channel are formed in the first valve seat and the second valve seat;
the ball body is arranged in the valve cavity and is arranged between the first valve seat and the second valve seat;
the valve cover is arranged outside the valve body, covers the access hole and is fixedly connected with the access platform through a bolt;
the valve rod is arranged in the valve cover in a penetrating way, one end of the valve rod is fixedly connected with the ball body, and the other end of the valve rod is connected with the actuator;
it is characterized in that the preparation method is characterized in that,
the inner side of the maintenance platform is provided with a step protruding into the maintenance hole, and a round hole with the diameter larger than that of the ball body is formed in the step; the first valve seat and the second valve seat are provided with a circle of connecting walls inserted into the round holes, and the connecting walls are connected with the inner side faces of the steps through elastic pieces.
2. The top-loading type ultra-low temperature ball valve as claimed in claim 1, wherein a first step is provided inside the valve body to fit with a connecting wall of the first and second valve seats, and the connecting wall is connected to an inner side surface of the first step through an elastic member.
3. The top-loading ultra-low temperature ball valve of claim 2, wherein the resilient member is a spring.
4. The top-loading, ultra-low temperature ball valve of claim 3, wherein said spring is fixed in said connecting wall.
5. The top-loading ultra-low temperature ball valve as claimed in claim 1, wherein an upper bracket ring inserted into the circular hole is provided inside the valve cover, and the ball body is provided with an upper insertion rod inserted into the upper bracket ring.
6. The top-loading ultra-low temperature ball valve as claimed in claim 5, wherein the upper plunger has a hole formed therein, the valve stem is inserted into the hole, and a horizontal plug screw is used to fixedly connect the valve stem to the upper plunger.
7. The top-loading ultra-low temperature ball valve as claimed in claim 1, wherein an end of the valve body opposite to the valve stem is provided with a lower bracket ring supporting the ball body, and the ball body is provided with a lower insertion rod inserted into the lower bracket ring.
8. The top-loading ultra-low temperature ball valve as claimed in claim 1, wherein a projection with a diameter larger than that of the stem body is arranged in the stem, and a sealant layer is wrapped outside the projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023200442.0U CN214331546U (en) | 2020-12-24 | 2020-12-24 | Top-mounted ultra-low temperature ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023200442.0U CN214331546U (en) | 2020-12-24 | 2020-12-24 | Top-mounted ultra-low temperature ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214331546U true CN214331546U (en) | 2021-10-01 |
Family
ID=77903519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023200442.0U Active CN214331546U (en) | 2020-12-24 | 2020-12-24 | Top-mounted ultra-low temperature ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214331546U (en) |
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2020
- 2020-12-24 CN CN202023200442.0U patent/CN214331546U/en active Active
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