Vertical sulfur hexafluoride gas collecting tank structure

Abstract

The utility model provides a vertical sulfur hexafluoride gas collecting tank structure, which relates to the technical field of gas collecting tanks, and comprises a storage tank, two threaded connection sleeves are arranged above the storage tank, two pull rings are arranged above the threaded connection sleeves, a group of positioning frames distributed in an annular array shape are arranged at the bottom of the storage tank, and the positioning frames are arranged on the storage tank. And a vertical butt joint sleeve is arranged above the storage tank. The valve and the storage tank are connected through the flange, and the locking bolt is subjected to double anti-loosening protection by matching with the anti-loosening structure, so that the sealing performance of the joint is improved, gas leakage is prevented, the anti-fatigue capability is higher, meanwhile, the valve is conveniently and quickly disassembled and replaced, the maintenance difficulty is remarkably reduced, and the problem that the valve of a traditional collection tank is generally in threaded connection and cannot be easily disassembled and replaced is solved. The sealing performance is poor; and loosening is easy to occur.

Description

Technical Field

[0001] This utility model relates to the field of gas collection tank technology, and in particular to a vertical collection tank structure for sulfur hexafluoride gas. Background Technology

[0002] In power systems, sulfur hexafluoride (SF6) gas is widely used due to its excellent insulation and arc-quenching properties. SF6 gas requires storage in vertical collection tanks, but traditional vertical collection tanks have the following problems in the gas collection and storage process:

[0003] In terms of transportation convenience, traditional collection tanks lack lifting rings, which makes them prone to instability, tilting and slipping during lifting. In terms of installation adaptability, the bottom of traditional collection tanks is supported by a simple frame structure, which makes them prone to tilting when placed on uneven ground, affecting the stability of the collection tank.

[0004] In terms of sealing and connection reliability, traditional sampling tanks mostly use threaded connections for valves, which have poor sealing performance and are prone to loosening. Especially when the temperature changes, thermal expansion and contraction may cause gaps in the sealing surface. In addition, during the gas sampling process, the valve opening of traditional sampling tanks is prone to change due to vibration or misoperation, which can easily lead to gas leakage, affect the accuracy of sampling, and even cause safety hazards. After long-term use, there is also the problem of decreased fatigue resistance. Utility Model Content

[0005] This utility model relates to a vertical collection tank structure for sulfur hexafluoride gas. The height of the lifting sleeve can be flexibly adjusted by rotating the threaded rod. With the help of the bottom rotating plate and friction pad, it can adapt to different angles and uneven ground, ensuring that the tank always remains vertically stable. When replacing the valve, the gas in the storage tank is emptied, the anti-loosening bracket is pushed away from the bolt head, the locking bolts are gradually loosened in diagonal order, the old valve is removed, the flange sealing surface is cleaned, the new sealing gasket is replaced, and the new valve is installed.

[0006] This utility model provides a vertical collection tank structure for sulfur hexafluoride gas, specifically including: a storage tank, two threaded connecting sleeves at the top of the storage tank, two pull rings installed at the top of the threaded connecting sleeves, a set of positioning frames arranged in a circular array at the bottom of the storage tank, a vertical docking sleeve at the top of the storage tank, a set of support structures installed at the bottom of the positioning frames, a valve installed with bolts at the top of the docking sleeve, a handwheel installed at the top of the valve, a threaded hole on one side of the handwheel, a vertical locking rod inserted into the threaded hole, a positioning strip installed at the bottom of the valve, and an anti-loosening bracket installed on the outer side of the positioning strip. The positioning strip and the anti-loosening bracket cooperate to form an anti-loosening structure.

[0007] Furthermore, a positioning sleeve is provided on the inner side of the positioning frame, and a vertical threaded rod is inserted inside the positioning sleeve. A rotating groove is opened above the threaded rod. The rotating groove has a circular structure. Two positioning bolts are installed above the positioning sleeve, and the positioning bolts extend into the interior of the rotating groove.

[0008] Furthermore, a lifting sleeve is installed on the outer side of the threaded rod. The inner side of the lifting sleeve has an internal thread, and the outer side of the lifting sleeve has two vertical arc protrusions. The inner side of the positioning sleeve has two sliding grooves corresponding to the positioning protrusions, and the arc protrusions extend into the interior of the sliding grooves.

[0009] Furthermore, a rotating plate is installed at the bottom of the lifting sleeve, a friction pad is installed at the bottom of the rotating plate, a set of positioning holes are opened at the corner of the rotating plate, and a set of stabilizing blocks are provided above the friction pad. The stabilizing blocks pass through the interior of the positioning holes. The positioning sleeve, threaded rod, lifting sleeve, rotating plate and friction pad cooperate with each other to form a support structure.

[0010] Furthermore, an annular groove is formed at the bottom of the locking rod, a retaining spring is installed on the inner side of the annular groove, a support spring is installed on the outer side of the locking rod, and a set of locking holes is formed at the edge of the valve above, with the bottom of the locking rod passing through the interior of the locking holes.

[0011] Furthermore, a connecting flange is provided at the upper position of the docking sleeve, and a docking flange is provided at the bottom position of the valve. A set of locking bolts is installed between the connecting flange and the docking flange. A rotating groove is opened on the inner side of the docking flange, and a positioning strip is installed on the inner side of the rotating groove. The positioning strip has an arc structure.

[0012] Furthermore, a connecting block is provided on one side of the anti-loosening bracket, and a connecting block is provided on one side of the positioning strip. The connecting block extends into the interior of the connecting block. A set of anti-loosening blocks is provided on the inner side of the anti-loosening bracket. The anti-loosening blocks and the large end of the locking bolt are in slight contact. An arc spring is installed on the outer side of the positioning strip.

[0013] This utility model provides a vertical collection tank structure for sulfur hexafluoride gas, which has the following beneficial effects:

[0014] This invention, by setting a pull ring on the top of the storage tank, can safely and reliably connect to the lifting equipment, effectively avoiding the risk of the tank shaking or falling during transportation, and greatly improving transportation safety and stability.

[0015] The support structure of this utility model can flexibly adjust the height of the lifting sleeve by rotating the threaded rod. In conjunction with the bottom rotating plate and friction pad, it can adapt to different angles and uneven ground, ensuring that the tank always remains vertical and stable. This enhances the applicability of the equipment in complex installation environments and solves the problem that traditional collection tanks are difficult to adapt to uneven ground, which can easily lead to tank tilting and sealing failure.

[0016] This utility model uses a flange to connect the valve and the storage tank, and uses an anti-loosening structure to provide double anti-loosening protection for the locking bolts. This not only improves the sealing performance of the connection and prevents gas leakage, but also enhances fatigue resistance. At the same time, it facilitates quick disassembly and replacement of the valve, significantly reducing maintenance difficulty. It solves the problem that traditional collection tank valves mostly use threaded connections, which have poor sealing performance and are prone to loosening.

[0017] This invention uses a locking rod and handwheel to precisely lock the valve opening, effectively preventing accidental rotation, ensuring a stable and safe gas collection process, and guaranteeing the accuracy of the detection data. It solves the problem that in traditional gas collection tanks, the valve opening is easily affected by vibration or misoperation during gas collection, which can affect the accuracy of the collection and even cause safety hazards. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0020] In the attached diagram:

[0021] Figure 1 This diagram shows the axonal structure of the vertical collection tank after assembly according to the present invention.

[0022] Figure 2 This utility model illustrates Figure 1 A schematic diagram of the axonal structure from an elevation viewpoint;

[0023] Figure 3 This utility model illustrates Figure 1 A schematic diagram of the right-side view structure;

[0024] Figure 4 This invention relates to a schematic diagram of the axial side structure of a partially cut-out structure of the handwheel and valve.

[0025] Figure 5 This utility model illustrates Figure 4 A schematic diagram of the axonal structure from an elevation viewpoint;

[0026] Figure 6A schematic diagram of the axial side structure of the cross-section of the support structure of this utility model is shown;

[0027] Figure 7 A schematic diagram of the axial side structure of the flange partially cut out according to this utility model is shown;

[0028] Figure 8 This utility model illustrates Figure 4 A magnified structural diagram at point A;

[0029] Figure 9 This utility model illustrates Figure 6 A magnified structural diagram at point B.

[0030] List of reference numerals

[0031] 1. Storage tank; 101. Pull ring; 102. Positioning bracket; 103. Docking sleeve;

[0032] 2. Support structure; 201. Positioning sleeve; 202. Threaded rod; 203. Lifting sleeve; 204. Rotating plate; 205. Friction pad;

[0033] 3. Valves; 301. Handwheels;

[0034] 4. Locking lever; 401. Snap ring;

[0035] 5. Anti-loosening structure; 501. Positioning strip; 502. Anti-loosening frame. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] Example 1: Please refer to Figures 1 to 9 :

[0038] This utility model proposes a vertical collection tank structure for sulfur hexafluoride gas, comprising: a storage tank 1, with two threaded connecting sleeves at the top of the storage tank 1, and two pull rings 101 installed above the threaded connecting sleeves. The thread pitch of the pull rings 101 and the threaded connecting sleeves is machined according to actual needs to achieve an effective threaded connection between the threaded connecting sleeves and the pull rings 101. Connecting the pull rings 101 to lifting equipment facilitates the transportation of the storage tank 1. A set of positioning frames 102 arranged in a circular array is provided at the bottom of the storage tank 1. A vertical docking sleeve 103 is provided at the top of the storage tank 1. A set of support structures 2 are installed at the bottom of the positioning frames 102. A positioning sleeve 201 is provided on the inner side of the positioning frame 102. A vertical threaded rod 202 is inserted inside the positioning sleeve 201. A rotating groove with a circular structure is opened at the top of the threaded rod 202. Two positioning bolts are installed at the top of the positioning sleeve 201. The threaded rod 202 is positioned vertically and laterally after the positioning bolts are installed inside the rotating groove, allowing it to rotate stably in place. A lifting sleeve 203 is installed on the outer side of the threaded rod 202. The inner side of the lifting sleeve 203 is threaded. The pitch of the threaded rod 202 and the lifting sleeve 203 is machined according to actual needs, so that the threaded rod 202 and the lifting sleeve 203 can be effectively threadedly connected. The outer side of the lifting sleeve 203 is provided with two vertical arc protrusions. The inner side of the positioning sleeve 201 is provided with two sliding grooves corresponding to the positioning protrusions. The arc protrusions extend into the interior of the sliding grooves. The arc protrusions and the sliding grooves achieve the effect of circumferential positioning of the lifting sleeve 203. Therefore, when the operator rotates the threaded rod 202, the lifting sleeve 203 can be controlled to rise and fall. Thus, when the operator rotates the threaded rod 202, the lifting sleeve 203 only makes linear movements, achieving precise height adjustment and meeting the support requirements of different installation scenarios of the storage tank 1.

[0039] In this embodiment, a rotating plate 204 is rotatably connected to the bottom of the lifting sleeve 203, and a friction pad 205 is installed at the bottom of the rotating plate 204. A set of positioning holes are opened at the corner of the rotating plate 204, and a set of stabilizing blocks are provided above the friction pad 205. The stabilizing blocks pass through the interior of the positioning holes. With the cooperation of the positioning holes and the stabilizing blocks, the rotating plate 204 and the friction pad 205 are stably assembled. The friction pad 205 is made of rubber according to actual needs. The positioning sleeve 201, the threaded rod 202, the lifting sleeve 203, the rotating plate 204, and the friction pad 205 cooperate with each other to form the support structure 2. The operator controls the rotating plate 204 and the friction pad 205 to move up and down by rotating the threaded rod 202. Therefore, when the friction pad 205 contacts the ground, it provides stable support for the collection tank, and the rotating plate 204 adapts to uneven ground through adaptive adjustment, thereby improving the installation stability of the collection tank.

[0040] In this embodiment, a valve 3 is installed on the upper part of the docking sleeve 103 with bolts. The valve 3 is selected according to the actual needs of the collection tank. A handwheel 301 is installed on the upper part of the valve 3. The handwheel 301 is connected to the ball valve of the valve 3 according to the prior art. The flow rate of the valve 3 is controlled by rotating the handwheel 301. A threaded hole is opened on one side of the handwheel 301. A vertical locking rod 4 is inserted into the threaded hole. The sliding hole positions the locking rod 4 laterally. An annular groove is opened at the bottom of the locking rod 4. A snap ring 401 is installed on the inner side of the annular groove. The annular groove positions the snap ring 401 vertically. A support spring is installed on the outer side of the locking rod 4. The support spring presses the locking rod 4 downward elastically. A set of locking holes is opened at the edge of the upper part of the valve 3. The bottom of the locking rod 4 passes through the inside of the locking holes. The locking rod 4 and the locking holes lock the handwheel 301 circumferentially. This can effectively prevent the flow rate of the valve 3 from changing due to vibration or misoperation, and ensure the accuracy and safety of the gas collection process.

[0041] In this embodiment, a positioning strip 501 is installed at the bottom of the valve 3, and an anti-loosening bracket 502 is installed on the outer side of the positioning strip 501. The positioning strip 501 and the anti-loosening bracket 502 cooperate to form an anti-loosening structure 5. A connecting flange is provided at the top of the docking sleeve 103, and a docking flange is provided at the bottom of the valve 3. A set of locking bolts is installed between the connecting flange and the docking flange. After the locking bolts are installed, the docking sleeve 103 and the valve 3 are stably assembled. A rotating groove is opened on the inner side of the docking flange, and a positioning strip 501 is installed on the inner side of the rotating groove. The positioning strip 501 has an arc structure. The rotating groove guides the rotation position of the positioning strip 501. The setting of the connecting flange and the docking flange solves the problem of assembling the valve 3 with the storage tank 1 using threads in the traditional way. Compared with the threaded connection, the flange connection has higher sealing performance and fatigue resistance, and at the same time facilitates quick disassembly and replacement of the valve 3.

[0042] In this embodiment, a docking block is provided on one side of the anti-loosening bracket 502 and a docking block is provided on one side of the positioning strip 501. The docking block extends into the interior of the docking block. The docking blocks are firmly joined together according to actual needs. The docking blocks can be assembled by interference fit. With the cooperation of the docking blocks, the positioning strip 501 and the anti-loosening bracket 502 are firmly joined together. After the positioning strip 501 and the anti-loosening bracket 502 are assembled, they can be positioned vertically to each other. A set of anti-loosening blocks is provided on the inner side of the anti-loosening bracket 502. The anti-loosening blocks are in slight contact with the large end of the locking bolt. An arc spring is installed on the outer side of the positioning strip 501. The arc spring supports the positioning strip 501 and the anti-loosening bracket 502 to return to their original position. The positioning strip 501 and the anti-loosening bracket 502 cooperate with each other to quickly prevent the locking bolt of the valve 3 from loosening. The operator can unlock the bolt by pushing the anti-loosening bracket 502 in the opposite direction. At this time, the bolt and the valve 3 can be removed. Compared with the traditional anti-loosening method, it is more reliable than using spring washers or double nuts for anti-loosening.

[0043] Example 2, based on Example 1, such as Figures 1-9 As shown, a sealing structure is installed between the docking sleeve 103 and the valve 3 according to actual needs, so that the docking position of the docking sleeve 103 and the valve 3 can be better sealed.

[0044] The working principle of this embodiment:

[0045] Align the bottom flange of valve 3 with the connecting flange of the connecting sleeve 103, insert the locking bolt, install the positioning strip 501 and the anti-loosening bracket 502. The anti-loosening bracket 502 contacts the bolt head under the support of the spring to complete the anti-loosening of the locking bolt. Install the locking rod 4 with the snap ring 401 on one side of the handwheel 301. The locking rod 4 with the spring locks the handwheel 301. After lifting the locking rod 4 upward, the handwheel 301 is unlocked. Install the threaded rod 202, the lifting sleeve 203, the rotating plate 204, and the friction pad 205 in sequence at the bottom of the positioning bracket 102.

[0046] Using a crane or forklift to connect the pull ring 101, the storage tank 1 is lifted to the designated installation position. The threaded rod 202 is rotated counterclockwise so that the lifting sleeve 203 drives the friction pad 205 to descend to contact the ground. The height of each support structure 2 is adjusted, and the adaptive rotation of the rotating plate 204 adapts to the uneven ground to ensure that the storage tank 1 is vertical and stable.

[0047] Connect the sampling pipeline to the outlet of valve 3, pull out the locking lever 4, turn the handwheel 301 counterclockwise to the required opening, add sulfur hexafluoride gas to the storage tank 1, then turn the handwheel 301 clockwise to close valve 3, and move the locking lever 4 downward to lock valve 3.

[0048] Regularly observe the wear of friction pad 205. If the wear exceeds the limit, replace friction pad 205. When disassembling, first lift the lifting sleeve 203.

[0049] When replacing valve 3, vent the gas in storage tank 1, push the anti-loosening bracket 502 away from the bolt head, gradually loosen the locking bolts in diagonal order, remove the old valve 3, clean the flange sealing surface, replace the new sealing gasket, install the new valve 3, repeat the installation steps of valve 3 to complete the replacement of valve 3.

[0050] When the vertical collection tank is not used for a long time, the gas in the storage tank 1 should be emptied and stored in a dry and ventilated place. Through the above steps, the structural advantages of this utility model can be effectively utilized to achieve safe collection, efficient operation and convenient maintenance of sulfur hexafluoride gas. The parameters in each step, such as torque value and flow range, can be adjusted according to the actual product specifications.

Claims

1. A vertical collection tank structure for sulfur hexafluoride gas, characterized in that, include: Storage tank (1), support structure (2) and anti-loosening structure (5). The storage tank (1) is provided with two threaded connecting sleeves at the top. Two pull rings (101) are installed at the top of the threaded connecting sleeves. The storage tank (1) is provided with a set of positioning frames (102) arranged in a ring array at the bottom. The storage tank (1) is provided with a vertical docking sleeve (103) at the top. The support structure (2) is installed at the bottom of the positioning frame (102). A valve (3) is installed at the top of the docking sleeve (103) with bolts. A handwheel (301) is installed at the top of the valve (3). A threaded hole is opened on one side of the handwheel (301). A vertical locking rod (4) is inserted into the threaded hole. A positioning strip (501) is installed at the bottom of the valve (3). An anti-loosening frame (502) is installed at the outer side of the positioning strip (501). The positioning strip (501) and the anti-loosening frame (502) cooperate to form the anti-loosening structure (5).

2. The vertical sulfur hexafluoride gas collection tank structure according to claim 1, characterized in that, The positioning frame (102) has a positioning sleeve (201) on its inner side. A vertical threaded rod (202) is inserted inside the positioning sleeve (201). A rotating groove is opened above the threaded rod (202). Two positioning bolts are installed above the positioning sleeve (201) and extend into the rotating groove.

3. The vertical sulfur hexafluoride gas collection tank structure according to claim 2, characterized in that, A lifting sleeve (203) is installed on the outer side of the threaded rod (202). The inner side of the lifting sleeve (203) is threaded. The outer side of the lifting sleeve (203) is provided with two vertical arc protrusions. The inner side of the positioning sleeve (201) is provided with two sliding grooves corresponding to the positioning protrusions. The arc protrusions extend into the interior of the sliding grooves.

4. The vertical sulfur hexafluoride gas collection tank structure according to claim 3, characterized in that, A rotating plate (204) is installed at the bottom of the lifting sleeve (203), and a friction pad (205) is installed at the bottom of the rotating plate (204). A set of positioning holes are opened at the corner of the rotating plate (204), and a set of stabilizing blocks are provided above the friction pad (205). The stabilizing blocks pass through the interior of the positioning holes. The positioning sleeve (201), the threaded rod (202), the lifting sleeve (203), the rotating plate (204), and the friction pad (205) cooperate with each other to form a support structure (2).

5. The structure of a vertical sulfur hexafluoride gas collection tank according to claim 1, characterized in that, An annular groove is opened at the bottom of the locking rod (4), a snap ring (401) is installed on the inner side of the annular groove, a support spring is installed on the outer side of the locking rod (4), and a set of locking holes are opened at the edge of the valve (3), with the bottom of the locking rod (4) passing through the interior of the locking holes.

6. The vertical sulfur hexafluoride gas collection tank structure according to claim 1, characterized in that, A connecting flange is provided at the upper position of the docking sleeve (103), and a docking flange is provided at the bottom position of the valve (3). A set of locking bolts is installed between the connecting flange and the docking flange. A rotating groove is opened on the inner side of the docking flange, and a positioning strip (501) is installed on the inner side of the rotating groove.

7. The vertical sulfur hexafluoride gas collection tank structure according to claim 1, characterized in that, One side of the anti-loosening bracket (502) is provided with a connecting block, and one side of the positioning strip (501) is provided with a connecting block. The connecting block extends into the interior of the connecting block. A set of anti-loosening blocks is provided on the inner side of the anti-loosening bracket (502). The anti-loosening blocks and the large end of the locking bolt are in slight contact. An arc spring is installed on the outer side of the positioning strip (501).

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