Usage-resistant transformer butterfly valve

Abstract

The utility model relates to the field of transformer butterfly valves, and discloses a durable transformer butterfly valve which comprises a valve body used for containing valve components. The valve rod part comprises a first valve rod and a second valve rod, one end of the second valve rod is installed in the valve body, the other end of the second valve rod is connected with the bottom end of the first valve rod, and the top end of the first valve rod penetrates through the valve body and extends out of the valve body; the diameter of the first valve rod is larger than that of the second valve rod, so that the structural strength of the valve rod part is enhanced. According to the utility model, the diameter of the first valve rod is larger than that of the second valve rod, so that the structural strength of the valve rod part is obviously enhanced, the valve rod part is more stable when bearing pressure and is not easy to deform or break, and the reinforcing ribs can improve the structural stability of the first valve rod at the slotting position and improve the anti-breaking performance of the valve rod part.

Description

Technical Field

[0001] The utility model relates to the field of transformer butterfly valves, in particular to a durable transformer butterfly valve. Background Art

[0002] The design life of transformer valves is more than 10 years. The rationality of their structure directly affects the service life of the valve, and also affects the operation and maintenance costs of high-speed railways as well as the overhaul cycle and cost.

[0003] The transformer butterfly valve currently used has the thinnest part of the valve stem (see the attached manual) after hundreds of openings and closings. Figure 1 This directly increases the maintenance cost of the transformer butterfly valve (increased costs, shorter cycles), and even affects the normal operation of the high-speed rail.

[0004] After analysis, the 80 butterfly valve stem currently used in transformers is as shown in the attached manual. Figure 1 As shown in the figure, the valve stem diameter is 10mm, and the diameter at the circumferential sealing groove is 6.6mm. Due to the small diameter and low strength at this location, it becomes a weak link when subjected to torsional torque and is prone to breakage. It cannot fully meet the requirements of frequent opening and closing of the butterfly valve. Once broken, the maintenance cycle of the high-speed rail or EMU transformer is prolonged, the maintenance workload is increased, and hidden dangers are brought to the operation and maintenance of the high-speed rail or EMU. Utility Model Content

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A durable transformer butterfly valve, comprising:

[0007] A valve body, used to accommodate valve components;

[0008] The valve stem portion comprises a first valve stem and a second valve stem, wherein one end of the second valve stem is installed in the valve body, and the other end is connected to the bottom end of the first valve stem, and the top end of the first valve stem penetrates the valve body and extends to the outside of the valve body;

[0009] Wherein, the diameter of the first valve stem is greater than the diameter of the second valve stem, so as to enhance the structural strength of the valve stem portion;

[0010] The surface of the first valve stem is provided with two circumferential sealing grooves for accommodating sealing rings;

[0011] A plurality of reinforcing ribs are installed on the inner wall of each circumferential sealing groove.

[0012] The first valve stem comprises:

[0013] An assembly groove is provided at the bottom of the first valve stem and is used for connecting with the second valve stem;

[0014] The assembly block is mounted on the inner wall of the assembly groove.

[0015] The second valve stem comprises:

[0016] The connecting groove is arranged at the top end of the second valve stem and matches with the assembly block of the first valve stem and is used for connecting the first valve stem and the second valve stem.

[0017] Also includes:

[0018] A valve plate, installed in the valve body, connected to the valve stem via an elastic cylindrical pin, and used to control the opening and closing of the valve body;

[0019] A positioning block is installed on the valve body, and the first valve stem passes through the positioning block, which is used to determine the movement trajectory and position of the valve stem;

[0020] An indicator needle is installed on the first valve stem and is used to indicate the opening and closing status of the valve plate.

[0021] The valve body is provided with a groove, a positioning ball is connected in the groove, the positioning ball is connected to the positioning block, a side wall of the groove is connected to an elastic member, one end of the elastic member is connected to the positioning ball.

[0022] Also includes:

[0023] Two first O-rings are installed on both sides of the valve body respectively;

[0024] The second O-ring is installed on the valve plate and is used for sealing between the valve plate and the valve body;

[0025] Two third O-rings are installed on the first valve stem and connected to the valve body, and are used for sealing between the valve stem and the valve body.

[0026] The utility model provides a durable transformer butterfly valve. Compared with the prior art, it has the following beneficial effects:

[0027] 1. The diameter of the first valve stem is larger than that of the second valve stem, which significantly enhances the structural strength of the valve stem, making it more stable when under pressure and less prone to deformation or fracture. The reinforcing ribs can enhance the structural stability of the first valve stem at the slot and enhance the anti-fracture performance of the valve stem.

[0028] 2. The first valve stem and the second valve stem are connected in a detachable manner, so that when the valve stem needs to be replaced, only the upper part of the first valve stem needs to be replaced, without replacing the entire valve stem, thereby reducing maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The figure is a valve stem structure diagram of a transformer butterfly valve in the prior art.

[0030] Figure 2 This is a schematic diagram of the three-dimensional structure proposed by the utility model.

[0031] Figure 3 This is a schematic diagram of the cross-sectional structure proposed by the utility model.

[0032] Figure 4 This is a structural schematic diagram of the valve stem portion proposed by the utility model.

[0033] Figure 5 This is a schematic diagram of the cross-sectional structure of the valve stem portion proposed by the utility model.

[0034] Figure 6 This is a schematic diagram of the explosion structure of the valve stem part proposed by the utility model.

[0035] The reference numerals in the figure are:

[0036] 1. Valve body; 2. Valve plate; 3. Valve stem; 301. First valve stem; 302. Second valve stem; 303. Circumferential sealing groove; 304. Reinforcing rib; 305. Assembly groove; 306. Assembly block; 307. Connecting groove; 4. Positioning block; 5. Indicator needle; 6. Positioning ball; 7. First O-ring; 8. Second O-ring; 9. Third O-ring; 10. Elastic member; 11. Elastic cylindrical pin. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] Reference Figure 2-Figure 6 , a durable transformer butterfly valve, comprising:

[0039] The valve body 1 is used to accommodate valve components; the valve stem portion 3 includes a first valve stem 301 and a second valve stem 302, wherein one end of the second valve stem 302 is installed in the valve body 1, and the other end is connected to the bottom end of the first valve stem 301, and the top end of the first valve stem 301 penetrates the valve body 1 and extends to the outside of the valve body 1; wherein the diameter of the first valve stem 301 is greater than the diameter of the second valve stem 302 to enhance the structural strength of the valve stem portion 3. The design of the first valve stem 301 fully considers its importance in the entire valve system, and its diameter is large. The second valve stem 302 not only enhances the structural strength of the valve stem portion 3, but also makes it more stable when under pressure; two circumferential sealing grooves 303 are provided on the surface of the first valve stem 301 for accommodating sealing rings; a plurality of reinforcing ribs 304 are installed on the inner wall of each circumferential sealing groove 303, and the sealing groove can accommodate the sealing ring to ensure the best sealing effect between the valve stem and the valve body 1, and the reinforcing ribs 304 can enhance the structural stability of the first valve stem 301 at the weak point of the groove, and can enhance the anti-fracture performance of the valve stem portion 3.

[0040] Reference Figure 4-Figure 6 , the first valve stem 301 includes: an assembly groove 305, which is opened at the bottom of the first valve stem 301 and is used to connect with the second valve stem 302; an assembly block 306, which is installed on the inner wall of the assembly groove 305; the second valve stem 302 includes: a connecting groove 307, which is opened at the top of the second valve stem 302, and cooperates with the assembly block 306 of the first valve stem 301, and is used for connecting the first valve stem 301 with the second valve stem 302; in order to facilitate the connection between the first valve stem 301 and the second valve stem 302, the assembly groove 305 is opened at the bottom of the first valve stem 301, and the assembly block 306 is installed on the inner wall of the assembly groove 305, and the connecting groove 307 is opened at the top of the second valve stem 302, which cooperates with the assembly block 306 of the first valve stem 301, ensuring that the connection between the two is both stable and flexible. When replacing the valve stem, it is only necessary to replace the first valve stem 301 of the upper half of the valve stem part 3, without having to replace multiple integral structures, which is more convenient for maintenance.

[0041] Reference Figure 2 and Figure 3 , the valve plate 2 is installed in the valve body 1 and is connected to the valve stem 3 through an elastic cylindrical pin 11, so as to control the opening and closing of the valve body 1; the positioning block 4 is installed on the valve body 1, and the first valve stem 301 passes through the positioning block 4, so as to determine the movement trajectory and position of the valve stem; the indicating needle 5 is installed on the first valve stem 301, so as to indicate the opening and closing state of the valve plate 2. The valve plate 2 is tightly connected to the valve stem 3 through the elastic cylindrical pin 11, so as to ensure that when the operator rotates the valve stem, the valve plate 2 can accurately follow the action to realize the opening and closing of the valve. The positioning block 4 can determine the movement trajectory and position of the valve stem, and can also prevent the valve stem from deviating during movement. The indicating needle 5 rotates with the rotation of the valve stem, so as to intuitively display the opening and closing state of the valve plate 2.

[0042] Reference Figure 2 and Figure 3 A groove is provided on the valve body 1, a positioning ball 6 is connected in the groove, the positioning ball 6 is connected to the positioning block 4, an elastic member 10 is connected to the side wall of the groove, one end of the elastic member 10 is connected to the positioning ball 6, and the positioning ball 6 can stabilize the position of the positioning block 4.

[0043] Reference Figure 3 , two first O-rings 7 are respectively installed on both sides of the valve body 1; the second O-ring 8 is installed on the valve plate 2 and is used for sealing between the valve plate 2 and the valve body 1; two third O-rings 9 are installed on the first valve stem 301 and connected to the valve body 1, and are used for sealing between the valve stem and the valve body 1.

[0044] During use, when the operator rotates the first valve stem 301, since the first valve stem 301 and the second valve stem 302 are tightly connected through the assembly groove 305 and the connecting groove 307, the second valve stem 302 will also rotate synchronously. This rotational force is transmitted to the valve plate 2 through the elastic cylindrical pin 11, thereby changing the flow state of the valve. The two third O-rings 9 on the first valve stem 301 are in close contact with the valve body 1 to form a seal between the valve stem and the valve body 1. The second O-ring 8 on the valve plate 2 is also sealed with the valve body 1 to ensure that the valve will not leak when it is closed. The positioning block 4 and the indicator needle 5 ensure that the movement trajectory of the valve stem is accurate, and the indicator needle 5 intuitively displays the valve plate 2 is in the open state, the positioning ball 6 on the valve body 1 plays a positioning and buffering role when the valve is working, ensuring that the valve stem will not deviate when it rotates. In order to facilitate the connection between the first valve stem 301 and the second valve stem 302, an assembly groove 305 is opened at the bottom of the first valve stem 301, and an assembly block 306 is installed on the inner wall of the assembly groove 305, and a connecting groove 307 is opened at the top of the second valve stem 302, which cooperates with the assembly block 306 of the first valve stem 301 to ensure that the connection between the two is both stable and flexible. When replacing the valve stem, it is only necessary to replace the first valve stem 301 in the upper half of the valve stem part 3, without having to replace multiple overall structures, which is more convenient for maintenance.

[0045] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0046] The diameter of the first valve stem 301 is greater than that of the second valve stem 302 , which significantly enhances the structural strength of the valve stem portion 3 , making it more stable when under pressure and less prone to deformation or breakage. The reinforcing rib 304 can enhance the structural stability of the first valve stem 301 at the groove, and enhance the anti-fracture performance of the valve stem portion 3 .

[0047] The first valve stem 301 and the second valve stem 302 are detachably connected, so that when the valve stem needs to be replaced, only the upper half of the first valve stem 301 needs to be replaced, without replacing the entire valve stem portion 3, thereby reducing maintenance costs and time.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A durable transformer butterfly valve, characterized in that: include: A valve body (1), used to accommodate valve components; A valve stem portion (3), comprising a first valve stem (301) and a second valve stem (302), wherein one end of the second valve stem (302) is mounted in the valve body (1), and the other end is connected to the bottom end of the first valve stem (301), and the top end of the first valve stem (301) passes through the valve body (1) and extends to the outside of the valve body (1); Wherein, the diameter of the first valve stem (301) is greater than the diameter of the second valve stem (302), so as to enhance the structural strength of the valve stem portion (3); The surface of the first valve stem (301) is provided with two circumferential sealing grooves (303) for accommodating sealing rings; A plurality of reinforcing ribs (304) are installed on the inner wall of each circumferential sealing groove (303).

2. A durable transformer butterfly valve according to claim 1, characterized in that: The first valve stem (301) comprises: An assembly groove (305) is formed at the bottom of the first valve stem (301) and is used to connect with the second valve stem (302); The assembly block (306) is mounted on the inner wall of the assembly groove (305).

3. The durable transformer butterfly valve according to claim 2, characterized in that: The second valve stem (302) comprises: The connecting groove (307) is formed at the top end of the second valve stem (302) and matches with the assembly block (306) of the first valve stem (301) to connect the first valve stem (301) and the second valve stem (302).

4. The durable transformer butterfly valve according to claim 1, characterized in that: Also includes: A valve plate (2) is installed in the valve body (1) and connected to the valve stem (3) via an elastic cylindrical pin (11) and is used to control the opening and closing of the valve body (1); A positioning block (4) is mounted on the valve body (1), wherein the first valve stem (301) passes through the positioning block (4) and is used to determine the movement trajectory and position of the valve stem; An indicator needle (5) is mounted on the first valve stem (301) and is used to indicate the open and closed states of the valve plate (2).

5. The durable transformer butterfly valve according to claim 4, characterized in that: The valve body (1) is provided with a groove, a positioning ball (6) is connected in the groove, the positioning ball (6) is connected to the positioning block (4), a side wall of the groove is connected to an elastic member (10), one end of the elastic member (10) is connected to the positioning ball (6).

6. The durable transformer butterfly valve according to claim 4, characterized in that: Also includes: Two first O-rings (7) are respectively installed on two sides of the valve body (1); A second O-ring (8) is mounted on the valve plate (2) and is used for sealing between the valve plate (2) and the valve body (1); Two third O-rings (9) are mounted on the first valve stem (301) and connected to the valve body (1) to provide sealing between the valve stem and the valve body (1).

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