CN216306381U

CN216306381U - Rolling mill HGC cylinder with leakage monitoring function

Info

Publication number: CN216306381U
Application number: CN202122757053.6U
Authority: CN
Inventors: 杨文海; 杨文玉; 薛越; 李�浩; 岳国厂; 芦利军; 温利军; 高军; 栗昕
Original assignee: Baotou Iron and Steel Group Co Ltd
Current assignee: Baotou Iron and Steel Group Co Ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-04-15
Anticipated expiration: 2031-11-11

Abstract

The utility model provides a rolling mill HGC cylinder with a leakage monitoring function, and belongs to the technical field of HGC cylinders. The rolling mill HGC cylinder with the leakage monitoring function comprises a cylinder barrel, a cylinder cover connected with the cylinder barrel, a cylinder rod arranged in the cylinder barrel and a piston connected with the cylinder rod; a first cylinder rod side seal and a second cylinder rod side seal are sequentially arranged in the cylinder cover from top to bottom; and a leakage monitoring hole is formed between the first cylinder rod side seal and the second cylinder rod side seal. The rolling mill HGC cylinder with the leakage monitoring function can be used for monitoring the operation of the sealing condition of the cylinder rod, can be found in time when the leakage defect occurs in the sealing, and has the practical function of observing the defect of the sealing failure and the deterioration.

Description

Rolling mill HGC cylinder with leakage monitoring function

Technical Field

The utility model relates to the technical field of HGC cylinders, in particular to a rolling mill HGC cylinder with a leakage monitoring function.

Background

In the actual production of a steel rolling production line in the steel industry, a rolling mill is a core device of the rolling production line, and an HGC cylinder is a core function device of the rolling mill, so that the rolling force is provided, the rapid dynamic response is realized, and the product quality is ensured.

The main failure mode of the HGC cylinder of the rolling mill is that hydraulic oil leakage is caused by failure of the side seal of the cylinder rod, once the hydraulic oil is seriously leaked due to failure of the HGC seal, the HGC cylinder needs to be replaced in a production stop mode, the time for replacing the HGC cylinder needs to be long, the HGC cylinder of the rolling mill in a wide and thick plate production line needs to be replaced for more than 24 hours, the production stop mode causes a large amount of product loss, and the normal production line is greatly influenced.

Before the hydraulic cylinder appears leaking and loses efficacy, hydraulic oil leakage abnormal conditions can appear between a piston rod and a cylinder cover of the hydraulic cylinder, the hydraulic cylinder which is conventionally arranged outside a rolling mill frame can find the abnormal conditions in time through daily point inspection, and the HGC cylinder is arranged in the rolling mill frame.

At present, in the prior art, a rolling mill HGC cylinder with leakage monitoring and leakage emergency treatment functions does not exist in the industry, the structure of a single seal of the HGC cylinder is improved by the technologies such as a novel AGC cylinder dustproof sealing ring (CN201620123582.7), the service life of the HGC cylinder seal is prolonged, the service life of the seal is limited, and when the HGC cylinder seal is used to age and lose efficacy due to expiration, the seal failure still occurs to cause the serious leakage of hydraulic oil, so that the equipment accident of rolling mill production stop is caused.

If can carry out operation monitoring to HGC jar sealed situation, discovery sealed degradation defect and from the aspect of design structure realize allowing to take sealed emergent processing function after revealing in sealed earlier stage that the seepage appears, still can continue to produce after taking emergent processing measure after sealed revealing, treat plan maintenance day and carry out the change of HGC jar again, then can avoid HGC jar equipment accident, avoid the loss of stopping production of production line. Therefore, the utility model is very necessary and practical for the rolling mill HGC cylinder with the leakage monitoring and leakage emergency disposal functions.

SUMMERY OF THE UTILITY MODEL

In view of the above, in order to solve the technical problem that hydraulic oil leaks due to failure of a cylinder rod side seal of a rolling mill HGC cylinder in the prior art, and no effective monitoring means is provided, the utility model provides the rolling mill HGC cylinder with the leakage monitoring function, which can be used for monitoring the operation of the sealing condition of the cylinder rod, can be found in time when the leakage defect occurs in the seal, and has a practical function of observing the defect of seal failure and degradation.

In order to achieve the purpose, the utility model provides the following technical scheme:

a rolling mill HGC cylinder with a leakage monitoring function comprises a cylinder barrel, a cylinder cover connected with the cylinder barrel, a cylinder rod arranged in the cylinder barrel and a piston connected with the cylinder rod;

a first cylinder rod side seal and a second cylinder rod side seal are sequentially arranged in the cylinder cover from top to bottom;

and a leakage monitoring hole is formed between the first cylinder rod side seal and the second cylinder rod side seal.

Preferably, the outer side end of the leakage monitoring hole is processed with a pipe thread.

Preferably, the pipe thread connects the pipe joint and the hose in this order.

Preferably, a dust ring is arranged above the cylinder rod side seal I.

Preferably, a first guide belt and a second guide belt are sequentially arranged below the second cylinder rod side seal.

Preferably, a first piston side guide belt and a second piston side guide belt are arranged in the piston from top to bottom.

Preferably, a cylinder barrel seal is arranged at the joint of the cylinder cover and the cylinder barrel.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the rolling mill HGC cylinder with the leakage monitoring function, the cylinder rod side seal I and the cylinder rod side seal II are arranged on the cylinder rod side, the leakage monitoring hole of the first seal (the cylinder rod side seal II) is processed between the two seals, the leakage monitoring hole is connected with the pipe joint and the leakage monitoring hose through the pipe threads, the operation monitoring of the sealing condition of the cylinder rod can be carried out, the leakage defect can be found in time when the seal has the leakage defect, and the practical function of observing the defect of the sealing failure and the deterioration is achieved.

2. The rolling mill HGC cylinder with the leakage monitoring function provided by the utility model realizes the emergency treatment practical function that if the hydraulic oil is seriously leaked after the seal of the HGC cylinder is leaked, a leakage-proof plug is arranged on the leakage monitoring pipe joint, the seal is realized by the second seal above the two seals arranged on the cylinder cover, the HGC cylinder continues to operate, the normal production can be continued after the emergency treatment measures are taken after the seal is leaked, the replacement of the HGC cylinder is carried out on the scheduled maintenance day, the sudden accident of the HGC cylinder equipment can be avoided, and the production stop loss of a production line is avoided.

3. The rolling mill HGC cylinder with the leakage monitoring function provided by the utility model realizes the monitoring of the leakage state of the running of the key equipment HGC cylinder of the rolling mill, the on-line running time of the key equipment HGC cylinder can be determined according to the monitored leakage state condition in the actual running, if the HGC cylinder has no leakage defect, the on-line running time can be continuously used, and compared with the previous method of determining the on-line service life of the HGC cylinder by depending on experience, the maintenance cost of the equipment is greatly reduced.

Drawings

FIG. 1 is a component diagram of the present invention;

FIG. 2 is an enlarged view of the leak monitoring port of the present invention;

in the figure, 1 is a leakage monitoring hole, 101 is a pipe joint, 102 is a hose, 2 is a dust ring, 3 is a cylinder rod side sealing I, 4 is a cylinder rod side sealing II, 5 is a cylinder rod, 6 is a guide belt I, 7 is a guide belt II, 8 is a cylinder cover, 9 is a cylinder barrel sealing, 10 is a piston sealing, 11 is a piston side guide belt I, 12 is a piston side guide belt II, and 13 is a cylinder barrel.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, the utility model provides a rolling mill HGC cylinder with a leakage monitoring function, comprising a cylinder barrel 13, a cylinder head 8 connected with the cylinder barrel 13, a cylinder rod 5 arranged in the cylinder barrel 13 and a piston connected with the cylinder rod 5;

a first cylinder rod side seal 3 and a second cylinder rod side seal 4 are sequentially arranged in the cylinder cover 8 from top to bottom;

and a leakage monitoring hole 1 is formed between the first cylinder rod side seal 3 and the second cylinder rod side seal 4.

According to the rolling mill HGC cylinder with the leakage monitoring function, when the second sealing device 4 on the cylinder rod side has hydraulic oil leakage due to aging and other reasons, the leakage can be found through the leakage monitoring hole.

In the utility model, the outer side end of the leakage monitoring hole 1 is processed with a pipe thread, and the pipe thread is used for connecting the pipe joint 101, so that the leakage emergency treatment function is realized, and when the first seal (the second cylinder rod side seal 4) positioned below the first seal in the two seals arranged in the cylinder cover 8 is subjected to hydraulic oil leakage due to aging and other reasons, the leakage monitoring hole can be used for discovering the leakage of the hydraulic oil; if the hydraulic oil is seriously leaked, a leakage-proof plug can be arranged on the pipe joint 101, the upper seal (the first cylinder rod side seal 3) in the two seals arranged close to the cylinder rod side realizes sealing, and the HGC cylinder continues to operate.

In the utility model, a hose 102 is connected to the pipe joint 101, the hose 102 is connected to the pipe joint 101 which is connected to the leakage monitoring hole 1 through a pipe thread, one end of the hose 102 is connected to the pipe joint 101, and the other end of the hose is thrown to a position where sealing leakage can be conveniently monitored during production of a rolling mill, such as an underground hydraulic station of the rolling mill.

In the utility model, a dust ring 2 is arranged above the cylinder rod side sealing I3.

In the utility model, a first guide belt 6 and a second guide belt 7 are sequentially arranged below the second cylinder rod side seal 4.

In the present invention, the piston side of the cylinder rod 5 is provided with a piston seal 10.

In the utility model, a first piston side guide belt 11 and a second piston side guide belt 12 are arranged in the piston from top to bottom.

In the utility model, a cylinder barrel seal 9 is arranged at the joint of the cylinder cover 8 and the cylinder barrel 13.

According to the rolling mill HGC cylinder with the leakage monitoring function, the cylinder cover 8 is connected with the cylinder barrel 13 through a circle of bolts arranged on the cylinder cover.

By implementing the technical scheme, the utility model realizes the operation monitoring of hydraulic oil leakage caused by sealing failure, which is the most frequently occurring failure mode of the HGC cylinder of the key equipment of the rolling mill, can timely discover the leakage defect of the seal and observe the degradation development trend of the sealing failure; the practical function that if the hydraulic oil is seriously leaked after the HGC cylinder is sealed and leaked, emergency treatment can be adopted, and the HGC cylinder is replaced after the scheduled maintenance day is realized, so that the sudden accident of the HGC cylinder equipment can be avoided, and the production stop loss of a production line is avoided; the utility model realizes that the online running time of the HGC cylinder can be determined according to the monitored leakage state condition in actual running, the HGC cylinder can be continuously used if the HGC cylinder has no leakage defect, and compared with the prior method of determining the online service life of the HGC cylinder by experience, the method greatly reduces the equipment maintenance cost.

The above are merely preferred embodiments of the present invention; the scope of the utility model is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims

1. A rolling mill HGC cylinder with a leakage monitoring function is characterized by comprising a cylinder barrel, a cylinder cover connected with the cylinder barrel, a cylinder rod arranged in the cylinder barrel and a piston connected with the cylinder rod;

2. The rolling mill HGC cylinder with the leakage monitoring function according to claim 1, wherein the outer side end of the leakage monitoring hole is machined with a pipe thread.

3. The rolling mill HGC cylinder with the leakage monitoring function according to claim 2, wherein the pipe thread connects a pipe joint and a hose in sequence.

4. The rolling mill HGC cylinder with the leakage monitoring function according to claim 1, wherein a dust ring is arranged above the cylinder rod side seal I.

5. The rolling mill HGC cylinder with the leakage monitoring function according to claim 1, wherein a first guide belt and a second guide belt are sequentially arranged below the second cylinder rod side seal.

6. The rolling mill HGC cylinder with the leakage monitoring function according to claim 1, wherein a first piston side guide belt and a second piston side guide belt are arranged in the piston from top to bottom.

7. The rolling mill HGC cylinder with the leakage monitoring function according to any one of claims 1-6, wherein a cylinder barrel seal is arranged at the joint of the cylinder cover and the cylinder barrel.