Zirconium steel flange cover connecting structure

Abstract

The utility model discloses a zirconium steel flange cover connecting structure, which comprises a flange cover body, a zirconium sealing surface, a plurality of zirconium welding bolts and a plurality of fastening nuts, the sealing side of the zirconium sealing surface is connected with a zirconium material medium, the non-sealing side of the zirconium sealing surface is fixedly connected with the plurality of zirconium welding bolts, and the fastening nuts are fixedly connected with the zirconium material medium. Each zirconium welding bolt is correspondingly provided with one fastening nut, the fastening nuts are arranged on the zirconium welding bolts, the zirconium sealing face, the multiple zirconium welding bolts and the multiple fastening nuts form a sealing face assembly, a positioning hole assembly is arranged in the flange cover body, the sealing face assembly is arranged in the flange cover body through the positioning hole assembly, and the sealing face assembly is arranged in the flange cover body through the positioning hole assembly. And the shape of the positioning hole assembly is matched with that of the sealing surface assembly. According to the zirconium steel flange cover connecting structure, the flange cover body and the zirconium sealing face are connected together through the zirconium welding stud, then the zirconium welding stud and the flange cover body are connected through the fastening nut, and finally the sealing performance of the flange cover is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the field of rare metal equipment manufacturing, and particularly relates to a zirconium steel flange cover connection structure. Background Art

[0002] Zirconium has excellent corrosion resistance and can withstand the erosion of most chemical media such as acids, alkalis, and salts. It is widely used in chemical equipment with corrosive working conditions, such as reactors, heat exchangers, storage tanks, and pipelines. Because zirconium cannot be welded with other steel grades, a flange cover connection structure is required. The flange cover and the sealing surface are in direct contact with the medium. The current common method is to process screw holes on the sealing surface and the flange cover body. The sealing surface material is made of zirconium. After connecting the two with zirconium screws, the ends of the zirconium screws are welded to the sealing surface. Finally, the sealing surface is processed to the required roughness. This structure requires reserved sealing surface processing capacity, and the required zirconium plate thickness increases, resulting in material waste. The screw holes are opened on the sealing surface side. Although they will be fine-machined after welding, there is still a risk of leakage at the screw holes, affecting the sealing effect and service life. Utility Model Content

[0003] The purpose of the utility model is to solve the problems of the prior art and provide a zirconium steel flange cover connection structure, in which the flange cover body and the zirconium sealing surface are connected together through zirconium welding studs, and then the zirconium welding studs are connected to the flange cover body with fastening nuts, thereby ultimately ensuring the sealing performance of the flange cover.

[0004] In order to solve the technical problem, the technical solution of the utility model is:

[0005] A zirconium steel flange cover connection structure includes a flange cover body, a zirconium sealing surface, multiple zirconium welding studs and multiple fastening nuts. The sealing side of the zirconium sealing surface is connected to a zirconium material medium, and the non-sealing side of the zirconium sealing surface is fixedly connected to multiple zirconium welding studs. Each zirconium welding stud is correspondingly provided with a fastening nut, and the fastening nut is arranged on the zirconium welding stud. The zirconium sealing surface, multiple zirconium welding studs and multiple fastening nuts constitute a sealing surface assembly. A positioning hole assembly is provided in the flange cover body, and each zirconium welding stud passes through the positioning hole assembly and is connected to the corresponding fastening nut. The sealing surface assembly is arranged in the flange cover body through the positioning hole assembly, and the shape of the positioning hole assembly is adapted to the shape of the sealing surface assembly.

[0006] Preferably, the positioning hole assembly includes an integrally formed positioning groove, multiple through holes and multiple nut holes, each of the zirconium welding studs is correspondingly provided with a through hole, and each of the fastening nut is correspondingly provided with a nut hole, and through positioning grooves, through holes and nut holes are sequentially provided from one end of the flange cover body close to the zirconium sealing surface to the end away from the zirconium sealing surface, the one positioning groove is communicated with the multiple through holes, and each through hole is communicated with each nut hole, the bottom of the zirconium sealing surface is adapted to be installed in the positioning groove, the zirconium welding stud is adapted to be installed in the through hole, and the fastening nut is adapted to be installed in the nut hole, and the zirconium welding stud passes through the through hole and is connected to the fastening nut in the nut hole.

[0007] Preferably, a plurality of countersunk holes are provided on the non-sealing side of the zirconium sealing surface, each of the countersunk holes is correspondingly provided with a zirconium welding stud, and one end of the zirconium welding stud connected to the zirconium sealing surface is provided in the countersunk hole.

[0008] Preferably, the non-sealing side of the zirconium sealing surface is firmly welded to the zirconium welding stud.

[0009] Preferably, two countersunk holes are provided on the non-sealing side of the zirconium sealing surface.

[0010] Preferably, the fastening nut is fastened to the zirconium welding stud and is fixed in the nut hole by spot welding.

[0011] Preferably, the zirconium sealing surface and the zirconium welding stud are both made of zirconium, and the flange cover body and the fastening nut are both made of steel.

[0012] Preferably, an external thread is provided below the zirconium welding stud.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] The utility model provides a zirconium steel flange cover connection structure, wherein a non-sealing side of the zirconium sealing surface is provided with a plurality of countersunk holes, and zirconium welding studs are provided in the countersunk holes, and the flange cover body is connected to the zirconium sealing surface through the zirconium welding studs, and the surface of the sealing side of the zirconium sealing surface in contact with the medium has no openings, and the screw holes are not opened on the sealing surface side, so there is no need to reserve a sealing surface processing amount, which saves materials and reduces costs; the zirconium sealing surface, a plurality of zirconium welding studs and a plurality of fastening nuts form a sealing surface assembly, and the sealing surface assembly is arranged in the flange cover body through a positioning hole assembly, and specifically, the flange cover body and the zirconium sealing surface are connected together through the zirconium welding studs, and then the zirconium welding studs are connected to the flange cover body with the fastening nuts, without the risk of leakage at the screw holes, thereby ensuring the sealing and corrosion resistance of the flange cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 , a schematic diagram of the connection structure of a zirconium steel flange cover of the utility model;

[0016] Figure 2 , a schematic diagram of the disassembly of the components of a zirconium steel flange cover of the utility model;

[0017] Figure 3 , Schematic diagram of the structure of zirconium steel flange cover in the prior art.

[0018] Description of reference numerals:

[0019] 1. Flange cover body, 2. Zirconium sealing surface, 3. Zirconium welding stud, 4. Fastening nut;

[0020] 101, positioning groove, 102, through hole, 103, nut hole, 201, countersunk hole. DETAILED DESCRIPTION

[0021] The following describes the specific implementation of the present invention in conjunction with the embodiments:

[0022] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions for the implementation of the present invention. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this utility model without affecting the efficacy and purpose that can be achieved by the present utility model.

[0023] Example 1

[0024] like Figure 1 and Figure 2 As shown, a zirconium steel flange cover connection structure includes a flange cover body 1, a zirconium sealing surface 2, multiple zirconium welding studs 3 and multiple fastening nuts 4, the sealing side of the zirconium sealing surface 2 is connected to the zirconium material medium, and the non-sealing side of the zirconium sealing surface 2 is fixedly connected to multiple zirconium welding studs 3, each of the zirconium welding studs 3 is correspondingly provided with a fastening nut 4, and the fastening nut 4 is arranged on the zirconium welding stud 3. The zirconium sealing surface 2, multiple zirconium welding studs 3 and multiple fastening nuts 4 constitute a sealing surface assembly, a positioning hole assembly is provided in the flange cover body 1, each zirconium welding stud 3 passes through the positioning hole assembly and is connected to the corresponding fastening nut 4, the sealing surface assembly is arranged in the flange cover body 1 through the positioning hole assembly, and the shape of the positioning hole assembly is adapted to the shape of the sealing surface assembly.

[0025] The fastening nut is used to fasten the zirconium welding stud. On the one hand, the fastening nut ensures the sealing of the zirconium sealing surface with the zirconium welding stud on the flange cover body 1. The fastening nut is at the bottom of the flange cover body 1. The zirconium sealing surface, multiple zirconium welding studs and multiple fastening nuts form a sealing surface assembly that ensures the overall sealing.

[0026] Preferably, the positioning hole assembly includes an integrally formed positioning groove 101, multiple through holes 102 and multiple nut holes 103, each of the zirconium welding studs 3 is correspondingly provided with a through hole 102, and each of the fastening nut 4 is correspondingly provided with a nut hole 103, and a through positioning groove 101, a through hole 102 and a nut hole 103 are sequentially provided from the end of the flange cover body 1 close to the zirconium sealing surface 2 to the end away from the zirconium sealing surface 2, the one positioning groove 101 is communicated with the multiple through holes 102, and each through hole 102 is communicated with each nut hole 103, the bottom of the zirconium sealing surface 2 is adapted to be installed in the positioning groove 101, the zirconium welding stud 3 is adapted to be installed in the through hole 102, and the fastening nut 4 is adapted to be installed in the nut hole 103, and the zirconium welding stud 3 passes through the through hole 102 and is connected with the fastening nut 4 in the nut hole 103.

[0027] The positioning groove is used to fix the bottom of the zirconium sealing surface 2, the through hole is used to fix the zirconium welding stud, and the nut hole is used to fix the fastening nut.

[0028] Preferably, a plurality of countersunk holes 201 are provided on the non-sealing side of the zirconium sealing surface 2 , each of the countersunk holes 201 corresponds to a zirconium welding stud 3 , and one end of the zirconium welding stud 3 connected to the zirconium sealing surface 2 is provided in the countersunk hole 201 .

[0029] The countersunk hole is used to fix one end of the zirconium welding stud connected to the zirconium sealing surface.

[0030] Example 2

[0031] Preferably, the non-sealing side of the zirconium sealing surface 2 is firmly welded to the zirconium welding stud 3

[0032] Preferably, two countersunk holes 201 are provided on the non-sealing side of the zirconium sealing surface 2 .

[0033] Preferably, the fastening nut 4 is fastened to the zirconium welding stud 3 and is fixed in the nut hole 103 by spot welding.

[0034] The zirconium sealing surface 2 and the zirconium welding stud 3 are both made of zirconium, and the flange cover body 1 and the fastening nut 4 are both made of steel.

[0035] Preferably, an external thread is provided below the zirconium welding stud 3, and a zirconium welding stud is provided on the outer periphery below the zirconium welding stud. The zirconium welding stud passes through the flange cover body and is fastened with a fastening nut.

[0036] like Figure 3As shown, the prior art zirconium steel flange cover structure is to process screw holes on the sealing surface and the flange cover body, connect the two with zirconium screws, and then weld the ends of the zirconium screws to the sealing surface, and finally process the sealing surface to the required roughness. This structure requires reserved sealing surface processing amount, and the required zirconium plate thickness increases, resulting in material waste; the screw holes are opened on the sealing surface side. Although they will be fine-machined after welding, there is still a risk of leakage at the screw holes, which affects the sealing effect and service life.

[0037] The utility model discloses a zirconium steel flange cover connection structure, wherein a non-sealing side of the zirconium sealing surface is provided with a plurality of countersunk holes, and zirconium welding studs are provided in the countersunk holes, and the flange cover body is connected to the zirconium sealing surface through the zirconium welding studs, and the surface of the sealing side of the zirconium sealing surface in contact with the medium has no openings, and the screw holes are not opened on the sealing surface side, so there is no need to reserve a sealing surface processing amount, which saves materials and reduces costs; the zirconium sealing surface, a plurality of zirconium welding studs and a plurality of fastening nuts form a sealing surface assembly, and the sealing surface assembly is arranged in the flange cover body through a positioning hole assembly, and specifically, the flange cover body and the zirconium sealing surface are connected together through the zirconium welding studs, and then the zirconium welding studs are connected to the flange cover body with the fastening nuts, without the risk of leakage at the screw holes, thereby ensuring the sealing and corrosion resistance of the flange cover.

[0038] The assembly sequence of this utility model is as follows:

[0039] like Figure 2 As shown, the utility model discloses a zirconium steel flange cover connection structure. Two countersunk holes 201 are formed on the non-sealing side of the zirconium sealing surface 2. The zirconium welding studs 3 are firmly welded to the zirconium sealing surface 2 at the countersunk holes 201. Positioning grooves and through holes are machined on the side of the flange cover body 1 that contacts the zirconium sealing surface 2. The through holes on the side facing away from the sealing surface are expanded to form nut holes. The holes are expanded to the installation size of the fastening nuts 4. The sealing surface assembly is inserted into the corresponding holes of the positioning hole assembly of the flange cover body 1. The fastening nuts 4 are installed. After being tightened in place, the fastening nuts 4 are firmly spot-welded to the flange cover body 1. This completes the installation of the zirconium steel flange cover connection structure.

[0040] This zirconium steel flange cover connection structure consists of only four parts: the flange cover body, the zirconium sealing surface, the zirconium welding studs and the fastening nuts. It has a simple structure and is easy to operate. The flange cover body and the zirconium sealing surface are connected together through the zirconium welding studs, and then the zirconium welding studs are connected to the flange cover body with the fastening nuts, ultimately ensuring the sealing performance of the flange cover.

[0041] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention.

[0042] Many other changes and modifications can be made without departing from the concept and scope of the present invention. It should be understood that the present invention is not limited to specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A zirconium steel flange cover connection structure, characterized in that: The invention comprises a flange cover body (1), a zirconium sealing surface (2), a plurality of zirconium welding studs (3) and a plurality of fastening nuts (4), wherein the sealing side of the zirconium sealing surface (2) is connected to a zirconium material medium, and the non-sealing side of the zirconium sealing surface (2) is fixedly connected to the plurality of zirconium welding studs (3), each of the zirconium welding studs (3) is provided with a corresponding fastening nut (4), and the fastening nut (4) is provided on the zirconium welding stud (3). The zirconium sealing surface (2), the plurality of zirconium welding studs (3) and the plurality of fastening nuts (4) constitute a sealing surface assembly, a positioning hole assembly is provided in the flange cover body (1), each zirconium welding stud (3) passes through the positioning hole assembly and is connected to the corresponding fastening nut (4), the sealing surface assembly is arranged in the flange cover body (1) through the positioning hole assembly, and the shape of the positioning hole assembly is adapted to the shape of the sealing surface assembly.

2. The zirconium steel flange cover connection structure according to claim 1, characterized in that: The positioning hole assembly comprises an integrally formed positioning groove (101), a plurality of through holes (102) and a plurality of nut holes (103), each of the zirconium welding studs (3) correspondingly being provided with a through hole (102), and each of the fastening nuts (4) correspondingly being provided with a nut hole (103), and the through positioning groove (101), the through hole (102) and the nut hole (103) are sequentially provided from one end of the flange cover body (1) close to the zirconium sealing surface (2) to the other end away from the zirconium sealing surface (2). 103), the one positioning groove (101) is communicated with a plurality of through holes (102), each through hole (102) is communicated with each nut hole (103), the bottom of the zirconium sealing surface (2) is adapted to be installed in the positioning groove (101), the zirconium welding stud (3) is adapted to be installed in the through hole (102), the fastening nut (4) is adapted to be installed in the nut hole (103), and the zirconium welding stud (3) passes through the through hole (102) and is connected to the fastening nut (4) in the nut hole (103).

3. The zirconium steel flange cover connection structure according to claim 1, characterized in that: A plurality of countersunk holes (201) are provided on the non-sealing side of the zirconium sealing surface (2), and a zirconium welding stud (3) is correspondingly provided in each of the countersunk holes (201), and one end of the zirconium welding stud (3) connected to the zirconium sealing surface (2) is provided in the countersunk hole (201).

4. The zirconium steel flange cover connection structure according to claim 1, characterized in that: The non-sealing side of the zirconium sealing surface (2) is firmly welded to the zirconium welding stud (3).

5. The zirconium steel flange cover connection structure according to claim 4, characterized in that: Two countersunk holes (201) are provided on the non-sealing side of the zirconium sealing surface (2).

6. The zirconium steel flange cover connection structure according to claim 1, characterized in that: The fastening nut (4) is fastened to the zirconium welding stud (3) and is fixed in the nut hole (103) by spot welding.

7. The zirconium steel flange cover connection structure according to claim 1, characterized in that: The zirconium sealing surface (2) and the zirconium welding stud (3) are both made of zirconium, and the flange cover body (1) and the fastening nut (4) are both made of steel.

8. The zirconium steel flange cover connection structure according to claim 1, characterized in that: An external thread is provided below the zirconium welding stud (3).

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