Leakage-proof device for pump valve joint for liquid storage

Abstract

The utility model discloses a leakproof device for pump valve joint for liquid storage, which relates to the technical field of leakproof equipment and comprises an upper flange cover, a lower flange cover is arranged at the bottom end of the upper flange cover, and fixing components capable of fixing positions of flange bolts to prevent loosening are arranged at the rear ends of the upper flange cover and the lower flange cover. According to the anti-leakage device for pump valve joint for liquid storage, through the arrangement of the upper flange cover, the lower flange cover, the rear fixing plate, the rear insertion plate, the rear hexagonal groove, the second screw eye and the fixing screw, when the anti-leakage device is used, a hexagonal head of a flange connecting bolt is clamped into the front hexagonal groove in one side of the upper flange cover and one side of the lower flange cover, and the rear insertion plate is inserted along the rear insertion groove; the rear hexagonal groove in the rear inserting plate is arranged on the nut of the flange connecting bolt in a sleeving mode, the positions of the flange connecting bolt and the nut are synchronously fixed, the function of preventing the flange bolt from loosening and rotating is achieved, and the problem that the device does not have the function of preventing the flange bolt from loosening and rotating is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of leak-proof equipment, in particular to a leak-proof device for the pump-valve connection in liquid storage. Background Technique

[0002] Pump machines and valves are common equipment in liquefied storage facilities. The pump machine and the valve are usually connected by flanges. When connecting, the flanges of the pump machine and the valve are closely attached, and then locked by bolts and nuts.

[0003] Most of the media involved in liquefied storage are under high pressure. During the transportation process, the passage of high-pressure media is likely to cause vibration at the pump-valve connection position, and the bolts connecting the flanges rotate automatically, reducing the connection tightness of the flanges, and then inducing leakage problems. At present, there are two conventional solutions. One is to install a sealing ring between the flanges, and the other is to add a fixing part outside the flanges to further clamp the two groups of flanges. There are some functional deficiencies in the actual use process and there is room for improvement. For example, the sealing ring can only increase the sealing performance of the connection position, and leakage will still occur after the flange bolts are loosened. By clamping the flanges with fixing parts, the bolt direction of the fixing part is the same as the bolt direction of the flange connection. When the flange vibrates, it will also cause synchronous vibration of the bolts of the fixing part, that is, there is a certain probability that the bolts of the fixing part and the flange connection bolts will loosen synchronously, and it does not have the function of preventing the flange bolts from loosening and rotating.

[0004] Now, a new leak-proof device for the pump-valve connection in liquid storage is proposed to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a leak-proof device for the pump-valve connection in liquid storage to solve the problem of not having the function of preventing the flange bolts from loosening and rotating as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A leak-proof device for the pump-valve connection in liquid storage, including an upper flange cover. A lower flange cover is arranged at the bottom end of the upper flange cover. Lower fixing ears are respectively welded on the left and right sides of the lower flange cover. Upper fixing ears are respectively welded on the left and right sides of the upper flange cover. A fixing component capable of fixing the position of the flange bolts to prevent loosening is arranged at the rear end of the upper flange cover and the lower flange cover.

[0007] The fixed component includes two groups of rear slots which are respectively arranged inside the rear ends of the upper flange cover and the lower flange cover. On both sides of the rear ends of the upper flange cover and the lower flange cover, there are respectively first screw holes. At the front ends of the upper flange cover and the lower flange cover, there are respectively three groups of front hexagonal slots. Inside the rear slots, a rear insertion plate is inserted from the rear to the front. At the rear end of the rear insertion plate, there is a rear fixing plate welded. Inside the rear fixing plate and the rear insertion plate, there are three groups of rear hexagonal slots. On both sides of the rear end of the rear fixing plate, there are respectively second screw holes. Inside the second screw holes, fixing screws are inserted from the rear to the front.

[0008] Preferably, the positions of the front hexagonal slots and the rear hexagonal slots correspond to each other, and the front hexagonal slots and the rear hexagonal slots are arranged at equal intervals.

[0009] Preferably, the external shape and size of the rear insertion plate are adapted to the internal shape and size of the rear slot, and the front end of the rear fixing plate is in contact with the rear ends of the upper flange cover and the lower flange cover.

[0010] Preferably, the position dimensions of the first screw holes and the second screw holes correspond to each other one by one, and the fixing screws penetrate through the inside of the second screw holes and extend into the inside of the first screw holes.

[0011] Preferably, positioning magnets are respectively fixedly connected to the inner parts of the front and rear ends at the bottom of the upper fixing ear. A fixing bolt is inserted into the upper fixing ear from top to bottom, and a fixing nut is sleeved on the outside of the fixing bolt.

[0012] Preferably, the fixing bolt penetrates through the inside of the lower fixing ear and the upper fixing ear, and the bottom end of the positioning magnet is flush with the bottom end of the upper fixing ear.

[0013] Preferably, liquid leakage grooves are respectively arranged at the middle positions of the top end of the upper flange cover and the bottom end of the lower flange cover. Color-changing test papers are respectively pasted on the top end of the upper flange cover and the bottom end of the lower flange cover. On both sides of one end of the color-changing test paper close to the upper flange cover and the lower flange cover, there is evenly coated with non-drying glue.

[0014] Preferably, the upper flange cover, the lower flange cover, and the liquid leakage grooves are symmetrically distributed along the vertical center line, and the non-drying glue is in close contact with the upper flange cover and the lower flange cover.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The anti-leakage device for the pump valve connection in the liquid storage not only realizes the function of preventing the flange bolts from loosening and rotating automatically, but also realizes the function of facilitating butt joint installation, and also realizes the function of leakage feedback;

[0016] (1) By providing an upper flange cover, a lower flange cover, a front hexagonal groove, a rear slot, a first screw eye, a rear fixing plate, a rear plug plate, a rear hexagonal groove, a second screw eye and a fixing screw, when in use, at the pump-valve joint position of the liquefied storage tank, as the flange of the pump-valve is aligned, the bolts are driven in and tightened, then the upper flange cover and the lower flange cover are respectively put on the upper and lower ends of the flange, and the upper flange cover and the lower flange cover are pushed so that the hexagonal head of the flange connection bolt is inserted into the front hexagonal groove on one side of the upper flange cover and the lower flange cover, and then the nut angle of the flange connection bolt is adjusted by the hexagonal tool so that it matches the angle of the rear hexagonal groove, and then the rear plug plate is inserted along the rear slot, and the rear hexagonal groove on the rear plug plate is put on the nut of the flange connection bolt, and then the fixing screw is driven in from the second screw eye, the positions of the rear fixing plate and the rear plug plate are fixed, and the positions of the flange connection bolts and nuts are also fixed synchronously, and the flange connection bolts and nuts cannot rotate, and the sealing of the joint of the pump-valve is consistent, realizing the function of preventing the flange bolts from loosening and rotating;

[0017] (2) By providing a lower fixing ear, an upper fixing ear, a fixing bolt, a fixing nut and a positioning magnet, when the upper flange cover and the lower flange cover are docked, the lower fixing ear and the upper fixing ear fit together, and the positioning magnet at the bottom of the upper fixing ear attracts the lower fixing ear, so that the position of the upper flange cover and the lower flange cover remains fixed, which is convenient for the installer to drive in the fixing bolt and put on the fixing nut for quick installation, thus realizing the function of facilitating docking installation;

[0018] (3) By providing a leakage groove, a color-changing test paper and a self-adhesive sticker, when in use, either the upper flange cover or the lower flange cover can be at the upper position. When a leak occurs at the pump valve joint position, the flange cover at the lower position receives the leaked liquid in the liquefied storage equipment, and the liquid flows out along the leakage groove and contacts the color-changing test paper. The inspection personnel can understand the internal leakage by checking the color-changing test paper without opening the upper flange cover or the lower flange cover. The self-adhesive sticker facilitates the removal and replacement of the color-changing test paper, thereby realizing the function of leakage feedback. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view structural schematic diagram of the utility model;

[0020] Figure 2 It is a rear view structural schematic diagram of the utility model;

[0021] Figure 3 This is a front view structural diagram of the rear fixing plate of the utility model;

[0022] Figure 4 It is a rear view structural schematic diagram of the upper flange cover of the utility model;

[0023] Figure 5 This is a schematic diagram of the upper flange cover of the utility model when viewed from above;

[0024] Figure 6 Side view structural schematic diagram of the separated state of the upper flange cover and the rear plug board of the present utility model.

[0025] In the figure: 1. Upper flange cover; 2. Lower flange cover; 3. Front hexagonal groove; 4. Rear slot; 5. First screw hole; 6. Rear fixing plate; 7. Rear plug board; 8. Rear hexagonal groove; 9. Second screw hole; 10. Fixing screw; 11. Lower fixing ear; 12. Upper fixing ear; 13. Fixing bolt; 14. Fixing nut; 15. Positioning magnet; 16. Liquid leakage groove; 17. Color-changing test paper; 18. Adhesive. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment 1: Please refer to Figure 1-6 , a leak-proof device for the pump-valve connection in liquid storage, including an upper flange cover 1. A lower flange cover 2 is provided at the bottom end of the upper flange cover 1. Lower fixing ears 11 are respectively welded on the left and right sides of the lower flange cover 2, and upper fixing ears 12 are respectively welded on the left and right sides of the upper flange cover 1. A fixing component for fixing the position of the flange bolts to prevent loosening is provided at the rear end of the upper flange cover 1 and the lower flange cover 2;

[0028] Please refer to Figure 1-6 , a leak-proof device for the pump-valve connection in liquid storage further includes a fixing component. The fixing component includes two groups of rear slots 4, which are respectively arranged inside the rear ends of the upper flange cover 1 and the lower flange cover 2. First screw holes 5 are respectively arranged on both sides of the rear ends of the upper flange cover 1 and the lower flange cover 2. Three groups of front hexagonal grooves 3 are respectively opened at the front ends of the upper flange cover 1 and the lower flange cover 2. A rear plug board 7 is inserted into the rear slot 4 from back to front. A rear fixing plate 6 is welded to the rear end of the rear plug board 7. Three groups of rear hexagonal grooves 8 are arranged inside the rear fixing plate 6 and the rear plug board 7. Second screw holes 9 are respectively arranged on both sides of the rear end of the rear fixing plate 6. Fixing screws 10 are inserted into the second screw holes 9 from back to front;

[0029] The positions of the front hexagonal groove 3 and the rear hexagonal groove 8 correspond to each other. The front hexagonal groove 3 and the rear hexagonal groove 8 are arranged at equal intervals. The outer shape and size of the rear insertion plate 7 are adapted to the inner shape and size of the rear slot 4. The front end of the rear fixing plate 6 is in contact with the rear ends of the upper flange cover 1 and the lower flange cover 2. The position dimensions of the first screw hole 5 and the second screw hole 9 correspond one by one. The fixing screw 10 passes through the inside of the second screw hole 9 and extends into the inside of the first screw hole 5. By restricting the position of the flange connection bolt, its self-rotation is prevented, thereby achieving anti-loosening and anti-leakage.

[0030] Specifically, as Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, the upper flange cover 1 and the lower flange cover 2 are respectively sleeved on the upper and lower ends of the flange, and the upper flange cover 1 and the lower flange cover 2 are pushed so that the hexagonal head of the flange connection bolt is caught in the front hexagonal groove 3 on one side of the upper flange cover 1 and the lower flange cover 2. Then, the nut angle of the flange connection bolt is adjusted by an internal hexagonal tool. After its angle is adapted to the rear hexagonal groove 8, the rear insertion plate 7 is inserted along the rear slot 4. The rear hexagonal groove 8 on the rear insertion plate 7 is sleeved on the nut of the flange connection bolt. Then, the fixing screw 10 is driven in from the second screw hole 9, and the positions of the rear fixing plate 6 and the rear insertion plate 7 are fixed, and the positions of the flange connection bolt and the nut are also fixed synchronously. The flange connection bolt and the nut cannot rotate, and the sealing performance at the joint of the pump valve remains consistent.

[0031] Embodiment 2: Positioning magnets 15 are respectively fixedly connected to the inner parts of the front and rear ends at the bottom of the upper fixing ear 12. A fixing bolt 13 is inserted into the bottom end of the upper fixing ear 12 from top to bottom. A fixing nut 14 is sleeved on the outside of the fixing bolt 13. The fixing bolt 13 passes through the inside of the lower fixing ear 11 and the upper fixing ear 12. The bottom end of the positioning magnet 15 is flush with the bottom end of the upper fixing ear 12, which is convenient for upper and lower engagement.

[0032] Specifically, as Figure 1 and Figure 5 shown, the lower fixing ear 11 and the upper fixing ear 12 are in contact with each other. The positioning magnet 15 at the bottom of the upper fixing ear 12 forms an adsorption on the lower fixing ear 11, so that the positions of the upper flange cover 1 and the lower flange cover 2 are kept fixed, which is convenient for the installer to drive in the fixing bolt 13 and put on the fixing nut 14 for quick installation.

[0033] Embodiment 3: Leakage grooves 16 are respectively arranged at the middle positions of the top end of the upper flange cover 1 and the bottom end of the lower flange cover 2. Color-changing test papers 17 are respectively applied to the top end of the upper flange cover 1 and the bottom end of the lower flange cover 2. Adhesive tapes 18 are evenly coated on both sides of one end of the color-changing test papers 17 close to the upper flange cover 1 and the lower flange cover 2. The upper flange cover 1, the lower flange cover 2, and the leakage grooves 16 are symmetrically distributed along the vertical center line. The adhesive tapes 18 are in close contact with the upper flange cover 1 and the lower flange cover 2, and leakage can be visually detected when it occurs.

[0034] Specifically, Figure 1 , Figure 5 and Figure 6 As shown, the flange cover at the bottom receives the leaked liquid in the liquefied storage equipment. The liquid flows out along the leakage groove 16 and contacts the color-changing test paper 17. The inspection personnel can understand the internal leakage by checking the color-changing test paper 17 without opening the upper flange cover 1 and the lower flange cover 2. The self-adhesive label 18 facilitates the removal and replacement of the color-changing test paper 17.

[0035] Working principle: When the utility model is in use, first, at the pump-valve joint position of the liquefied storage tank, as the flange of the pump-valve is aligned, the bolts are driven in and tightened, and then the upper flange cover 1 and the lower flange cover 2 are respectively put on the upper and lower ends of the flange, and the upper flange cover 1 and the lower flange cover 2 are pushed to make the hexagonal head of the flange connection bolt inserted into the front hexagonal groove 3 on one side of the upper flange cover 1 and the lower flange cover 2, and then the nut angle of the flange connection bolt is adjusted by the hexagonal tool to make it match the angle of the rear hexagonal groove 8, and then the rear plug-in plate 7 is inserted along the rear slot 4, and the rear hexagonal groove 8 on the rear plug-in plate 7 is put on the nut of the flange connection bolt, and then the fixing screw 10 is driven in from the second screw eye 9, and the positions of the rear fixing plate 6 and the rear plug-in plate 7 are fixed, and the positions of the flange connection bolts and nuts are also fixed synchronously, and the flange connection bolts and nuts cannot rotate, and the sealing of the joint of the pump-valve is always consistent. When the upper flange cover 1 and the lower flange cover 2 are docked, the lower fixing ear 11 and the upper fixing ear 12 are fitted together, and the positioning magnet 15 at the bottom of the upper fixing ear 12 forms an adsorption on the lower fixing ear 11, so that the upper flange cover 1 and the lower flange cover 2 are kept in fixed position, which is convenient for the installer to drive the fixing bolt 13 and put on the fixing nut 14 for quick installation. Either the upper flange cover 1 or the lower flange cover 2 can be at the top. When a leak occurs at the pump valve joint position, the flange cover at the bottom receives the leaked liquid in the liquefied storage equipment, and the liquid flows out along the leakage groove 16 and contacts the color-changing test paper 17. The inspection personnel can check the color-changing test paper 17 to understand the internal leakage without opening the upper flange cover 1 and the lower flange cover 2. The self-adhesive sticker 18 facilitates the removal and replacement of the color-changing test paper 17.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A leak-proof device for a pump-valve joint for liquid storage, comprising an upper flange cover (1), characterized in that: A lower flange cover (2) is provided at the bottom end of the upper flange cover (1), lower fixing ears (11) are respectively welded on the left and right sides of the lower flange cover (2), and upper fixing ears (12) are respectively welded on the left and right sides of the upper flange cover (1), and fixing components that can fix the position of flange bolts to prevent loosening are provided at the rear ends of the upper flange cover (1) and the lower flange cover (2); The fixing assembly comprises two groups of rear slots (4), the two groups of rear slots (4) are respectively arranged inside the rear ends of the upper flange cover (1) and the lower flange cover (2), first screw holes (5) are respectively arranged on both sides of the rear ends of the upper flange cover (1) and the lower flange cover (2), three groups of front hexagonal slots (3) are respectively opened on the front ends of the upper flange cover (1) and the lower flange cover (2), a rear plug-in plate (7) is inserted into the interior of the rear slots (4) from back to front, a rear fixing plate (6) is welded to the rear end of the rear plug-in plate (7), three groups of rear hexagonal slots (8) are arranged inside the rear fixing plate (6) and the rear plug-in plate (7), second screw holes (9) are respectively arranged on both sides of the rear end of the rear fixing plate (6), and fixing screws (10) are inserted into the interior of the second screw holes (9) from back to front.

2. A leak-proof device for pump-valve connection for liquid storage according to claim 1, characterized in that: The positions of the front hexagonal groove (3) and the rear hexagonal groove (8) correspond to each other, and the front hexagonal groove (3) and the rear hexagonal groove (8) are arranged at equal intervals.

3. A leak-proof device for pump-valve connection for liquid storage according to claim 1, characterized in that: The shape and size of the exterior of the rear plug-in board (7) match the shape and size of the interior of the rear slot (4), and the front end of the rear fixing plate (6) fits the rear ends of the upper flange cover (1) and the lower flange cover (2).

4. A leak-proof device for pump-valve connection for liquid storage according to claim 1, characterized in that: The positions and sizes of the first screw eye (5) and the second screw eye (9) correspond one to one, and the fixing screw (10) passes through the interior of the second screw eye (9) and extends into the interior of the first screw eye (5).

5. A leak-proof device for pump-valve connection for liquid storage according to claim 1, characterized in that: Positioning magnets (15) are fixedly connected to the interior of the front and rear ends of the bottom of the upper fixing ear (12), and a fixing bolt (13) is inserted from top to bottom at the bottom of the upper fixing ear (12), and a fixing nut (14) is sleeved on the outside of the fixing bolt (13).

6. A leak-proof device for pump-valve connection for liquid storage according to claim 5, characterized in that: The fixing bolt (13) passes through the interior of the lower fixing ear (11) and the upper fixing ear (12), and the bottom end of the positioning magnet (15) is flush with the bottom end of the upper fixing ear (12).

7. A leak-proof device for pump-valve connection for liquid storage according to claim 1, characterized in that: A leakage groove (16) is provided at the middle position of the top end of the upper flange cover (1) and at the middle position of the bottom end of the lower flange cover (2), respectively. A color-changing test paper (17) is applied to the top end of the upper flange cover (1) and the bottom end of the lower flange cover (2), respectively. Both sides of the color-changing test paper (17) near one end of the upper flange cover (1) and the lower flange cover (2) are evenly coated with a self-adhesive sticker (18).

8. A leak-proof device for pump-valve connection for liquid storage according to claim 7, characterized in that: The vertical center lines of the upper flange cover (1), the lower flange cover (2) and the liquid leakage groove (16) are symmetrically distributed, and the self-adhesive sticker (18) is tightly fitted to the upper flange cover (1) and the lower flange cover (2).

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