CN209992234U

CN209992234U - Online sampling device of lubricating oil

Info

Publication number: CN209992234U
Application number: CN201920674215.XU
Authority: CN
Inventors: 王保田
Original assignee: Three Gate Nuclear Power Co Ltd
Current assignee: Three Gate Nuclear Power Co Ltd; Sanmen Nuclear Power Co Ltd
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2020-01-24
Anticipated expiration: 2029-05-13

Abstract

An online lubricating oil sampling device belongs to the technical field of lubricating oil sampling. The device comprises a device body, a transition connecting piece, an oil level gauge, a sampling interface, a dust cover and a sampling pipe; one end of the inner side of the device body is connected with a transition connecting piece, the transition connecting piece is used for being arranged on equipment to be sampled, and the outer end of the device body is connected with an oil level gauge; the sampling interface is arranged on the device body, one end of the sampling interface is connected with the sampling tube, and the sampling tube is inserted into the equipment to be sampled through the transition connecting piece after extending into the device body; the dustproof cover is used for sealing the sampling interface; the sampling interface is internally provided with a spring and a ball, the spring is used for propping the ball to realize sealing when oil is not taken, and the ball is pushed open when the oil is taken. The utility model discloses realize under the condition that equipment did not stop the fortune, get the lubricating oil appearance of equipment safely, accurately, laborsavingly.

Description

Online sampling device of lubricating oil

Technical Field

The utility model belongs to the technical field of the online sampling of lubricating oil, concretely relates to have the oil level and show the function, can be used to carry out the device of oil sample to lubricating oil on line (under the condition of not shutting down the machine).

Background

Various types of rotating equipment (such as pumps, motors, etc.) are arranged in nuclear power plants, conventional power plants, large chemical plants, etc., and in order to monitor, predict and improve the operational reliability of these equipment, it is necessary to periodically sample and analyze lubricating oil in the bearing chambers, oil tanks, oil pipelines, etc., and to predict the wear state of rotating parts such as bearings by analyzing metal particles in an oil sample, which is called as the lubricating oil sampling predictive maintenance (Pdm) of the equipment, but the following problems are encountered in the oil sampling implementation process: 1. an oil level gauge for displaying the oil level and an oil cup (or an oil filling hole) for supplementing oil on the equipment have no online sampling interface function, and the equipment cannot realize online sampling under the running condition because the equipment does not have a proper oil sampling port; 2. if the manual online oil sampling of the equipment is carried out without stopping running through the oil filling hole or the oil cup, the rotating machinery can draw in the lubricating oil sampling tube, so that safety risks are caused to the equipment and sampling personnel; 3. if the equipment is shut down to take an oil sample of lubricating oil, redundancy loss or risk challenge is brought to the safe operation of systems and equipment of a power station or a factory, and the manpower input for isolating the equipment which is shut down and put into operation again is increased; after the equipment is shut down and the standby equipment is operated, if the standby equipment is shut down due to failure, the load of the power station or the plant is reduced or the plant is shut down, and the power station or the plant faces serious economic loss; 4. if the equipment is stopped to carry out oil sampling, impurities and particles in an oil chamber or an oil tank precipitate to the bottom, and the extracted oil sample cannot represent the actual situation of mixed oil under the operation condition of the equipment, so that the oil analysis result for predictive maintenance (Pdm) cannot accurately reflect the abrasion condition of the equipment in operation. Therefore, in order to ensure the smooth implementation of predictive maintenance (Pdm) for sampling and analyzing the lubricating oil of the equipment, an oil sampling device needs to be developed for the condition that the equipment does not stop running, so that the lubricating oil sample of the equipment can be safely, accurately and laborsavingly taken under the condition that the equipment does not stop running.

The utility model patent CN201320515768.3 discloses a lubricating oil sampler to specifically disclose lubricating oil sampler including sample container, sealing member and handle, the sample container top is equipped with the opening, the sealing member is used for the open-ended sealed, the handle is installed on sample container to erect in sample container top, the sampler still includes the haulage line, the sealing member is connected to the one end of haulage line, the handle is equipped with the through-hole that supplies the haulage line to upwards pass, the haulage line marks the scale mark, the plug is connected between sealing member and the opening. The lubricant sampler needs to be used to read the depth of the pull wire during sampling, and the lubricant sampler can be understood to be used when the equipment is shut down, so the technical problem exists. And the lubricating oil sampler needs to immerse the sampling container into oil for sampling, and is not suitable for sampling in an oil pipeline of equipment.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the problem that prior art exists, provide an online sampling device of lubricating oil, under the condition that realizes that equipment does not shut down, realize safely, accurately, laborsavingly getting oil sample.

The utility model discloses a can realize through following technical scheme:

the utility model provides an online lubricating oil sampling device, which comprises a device body, a transition connecting piece, an oil level gauge, a sampling interface, a dustproof cover and a sampling tube; one end of the inner side of the device body is connected with the transition connecting piece, the transition connecting piece is used for being arranged on equipment to be sampled, and the outer end of the device body is connected with the oil level indicator; the sampling interface is arranged on the device body, one end of the sampling interface is connected with a sampling tube, and the sampling tube is inserted into equipment to be sampled through the transition connecting piece after extending into the device body; the dustproof cover is used for sealing the sampling interface; the sampling interface is internally provided with a spring and a ball, the spring is used for propping the ball to realize sealing when oil is not taken, and the ball is propped open when the oil is taken.

The transitional connection is arranged on the equipment to be sampled, and can be used for carrying out periodic sampling analysis on parts such as a bearing chamber or an oil tank or an oil pipeline of the equipment to be sampled. When the online sampling device is used for taking oil, the dust cover is opened, and an oil or oil pumping device is externally connected to a sampling joint. The utility model discloses a sampling interface of built-in spring and ball for the sampling tube has contrary function of ending, prevents that lubricating oil from probably revealing, and the spring withstands the ball and realizes sealing.

Preferably, the utility model also comprises a sampling joint; the sampling joint is connected with the sampling interface when oil is taken; the sampling joint is provided with an ejector pin which is hollow inside and provided with a groove at one end inside, and the ejector pin is fixed on the sampling joint through a clamp spring.

Preferably, the slot is a straight slot.

Preferably, the device further comprises a locking ring and a first sealing ring; the connecting part of the transition connecting piece and the equipment to be sampled is locked by a locking ring and sealed by a first sealing ring sleeved outside the locking ring.

Preferably, the oil level gauge is a transparent resin oil level gauge.

Preferably, the oil level gauge is provided with screw plugs at the upper part and the lower part respectively, and the ends of the two screw plugs positioned inside the oil level gauge are provided with a positive magnet and a negative magnet respectively and used for adsorbing iron impurities in oil.

Preferably, a boss is arranged at one end of the inner side of the oil level indicator, a sealing groove for placing the second sealing ring is formed in the boss, and the end, with the boss, of the oil level indicator is tightly pressed and hermetically assembled on the device body through a large nut.

Preferably, the utility model also comprises a linking piece, a linking post and a chain; the link column is arranged on the dustproof cover, and the link sheet is sleeved on the link column; one end of the chain is arranged at the sampling interface, and the other end of the chain is connected with the linking piece.

Preferably, the sampling tube end is bent in a direction of insertion into the device to be sampled.

The utility model discloses following beneficial effect has:

the utility model relates to an online sampling device of lubricating oil:

1. the function of the lubricating oil online sampling interface under the operation condition of the equipment is realized. At present, an oil level gauge for displaying an oil level and an oil cup (or an oil filling hole) for supplementing oil on equipment such as a nuclear power station, a conventional power station, a large-scale chemical plant and the like have no online sampling interface function, online sampling under the condition of equipment operation cannot be realized, and development of predictive maintenance (Pdm) of lubricating oil sampling analysis is hindered; the utility model discloses the device can provide the online sampling interface of lubricating oil (be connected with handheld sample pump etc.) of bearing room, grease chamber, oil tank, oil pipe way of equipment, and need not the equipment of shut down operation, provides the sampling interface for lubricating oil sample analysis predictive maintenance (Pdm).

2. The device can avoid the safety risk of lubricating oil on-line sampling other methods to equipment and personnel. At present, lubricating oil in a bearing chamber, an oil tank and an oil pipeline of equipment is sampled on line, and generally a sampling tube can be manually inserted into the oil filling hole for sampling, so that the sampling tube can be wound by a rotating machine shaft, and safety risks are caused to the equipment and sampling personnel; the utility model discloses the device is when needs sample, backs up the ball with the interface thimble from the area, carries out the oil sampling with the other end that the sample hose coupling was to the thimble again, equipment and personal safety when guaranteeing to get oil sampling under the equipment condition of not transporting.

3. The economical efficiency of equipment operation is improved. If the shutdown equipment is used for oil sampling, redundancy loss or risk challenge is brought to the safe operation of the system and equipment of the power station or the factory, and the labor input for isolating the shutdown equipment is increased; after the equipment is shut down and the backup equipment is operated, if the backup equipment is shut down due to a failure, the power plant or factory may be down loaded or shut down, and severe economic loss may be encountered. The device can realize safe and convenient oil sampling without stopping equipment, increases the economical efficiency of a power station or a factory, simultaneously reduces the starting and stopping of the standby equipment due to the oil sampling, and further reduces the fault introduction risk and improves the economical efficiency.

4. The device can obtain a representative oil sample, the accuracy of oil sample analysis predictive maintenance (Pdm) is improved, and the running reliability of equipment is improved. If the equipment is stopped for oil sampling, the lubricating oil is changed from a mixed dynamic state to a static state, impurities or particles in an oil chamber or an oil tank are precipitated to the bottom, and the extracted oil sample cannot represent the actual oil quality condition under the operation condition of the equipment, so that the analysis result of the oil sample for predictive maintenance (Pdm) cannot accurately reflect the abrasion condition of the equipment in operation. The device can realize the sampling of the lubricating oil during the operation of the equipment, so that impurities in the oil sample are uniform and do not precipitate, the representativeness of the oil sampling is further ensured, the accuracy of a predictive maintenance (Pdm) result is improved, and the operation reliability of the equipment is improved.

5. The positive and negative magnets on the oil level gauge of the device can adsorb impurities such as iron in oil nearby, so that inspection personnel can visually inspect the oil condition, and the abrasion, peeling and other faults of the running equipment bearing can be conveniently discovered, analyzed, early warned and processed early.

To sum up, the utility model discloses the device can realize under the condition that equipment does not stop the fortune, safe, accurate, laborsaving lubricating oil appearance of getting sign equipment wear state, reliability, economic nature, the security of improve equipment predictive maintenance (Pdm) analysis result and equipment operation.

Drawings

Fig. 1 is a schematic structural view of an online lubricating oil sampling device of the present invention;

FIG. 2 is a schematic structural view of a sampling joint of an online lubricating oil sampling device of the present invention;

fig. 3 is a schematic view of an internal structure of a sampling interface of an online lubricating oil sampling device according to the present invention;

fig. 4 is a sectional view of the connection between the oil level gauge and the device body in the online lubricating oil sampling device of the present invention.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, the utility model relates to an online sampling device of lubricating oil includes device body 9, transition piece 5, oil level gaugember 12, sample interface 14, shield 4, sampling tube 6. The device body 9 outer end is connected with oil level gaugember 12 through big nut 10, and inboard one end and transition piece 5 threaded connection install then on treating sampling equipment. The sampling interface 14 is arranged on the device body 9, one end of the sampling interface 14 is connected with the sampling tube 6, and the sampling tube 6 is inserted into the device body 9 through the transition connecting piece 5. The dust cover 4 is used for sealing the sampling interface 14 when oil extraction is not needed. The sampling interface 14 is internally provided with a spring and a ball, the spring is used for propping the ball to realize sealing when oil is not taken, and the ball is propped open when the oil is taken.

The device body 9 is of a hollow structure, allowing oil to pass through and enter the oil level gauge 12.

The inner end of the transition connecting piece 5 is provided with an external thread, and the sampling device is screwed on a bearing seat or an oil chamber or an oil tank or an oil pipeline of equipment to be sampled through the transition connecting piece 5. In order to further lock and seal the transition piece 5 and the device to be sampled, the sampling device further comprises a locking ring 7 and a first sealing ring 8. The connecting part of the transition connecting piece 5 and the equipment to be sampled is locked by a locking ring 7 and sealed by a first sealing ring 8 sleeved outside the locking ring 7. The locking ring is in locking connection with the transition connecting piece through threads. The first sealing ring 8 is an O-shaped sealing ring, is arranged between the locking ring 7 and the transition connecting piece 5, and can lock and seal the connecting part. The end of the sampling tube 6 is bent towards the direction of inserting into the device to be sampled, and the end of the sampling tube 6 is provided with a certain downward bending degree which can be conveniently extended into the lubricating oil. Because the sampling device is directly arranged on a bearing seat or an oil chamber or an oil tank or an oil pipeline of the equipment to be sampled, the oil taking pipe 6 can grab oil samples without running the equipment, and a rotating part cannot be rubbed or interfered.

The oil level gauge 12 is made of transparent resin, so that the oil level of an oil chamber can be conveniently observed when oil is taken. The center of the end face of the outer end of the oil level indicator 12 is provided with a cross mark for marking the oil level. The upper part and the lower part of the oil level indicator 12 are respectively provided with a screw plug 13 and a screw plug 11, and the end parts of the two screw plugs 11 and 13 positioned in the oil level indicator are respectively provided with a positive magnet and a negative magnet which are used for adsorbing iron impurities in oil. As shown in the figure, the screw plug 11 is provided with a positive magnet, and the screw plug 13 is provided with a negative magnet. As shown in fig. 4, a boss 121 is provided at one end of the inside of the oil level gauge 12, a sealing groove for placing the second sealing ring 24 is provided in the boss 121, and the end of the oil level gauge 12 having the boss is press-fitted and hermetically assembled to the device body 9 through a large nut 10. The second seal ring may be an O-ring seal 24. The internal thread of the large nut 10 is screwed with the external thread of the device body 9. The sampling port 14 is externally threaded onto the device body 9. Referring to fig. 3, the sampling port 14 has an inlet channel 23 at the lower end and an outlet channel 22 at the upper end. A spring 20 and a ball 21 are provided between the inlet flow passage 23 and the outlet flow passage 22. The balls 21 are arranged between the spring 20 and the outlet flow channel 22. The sealing is realized by the spring force against the ball, and the possible leakage of the lubricating oil is prevented. When the oil is taken, the ball can be pushed open, and the lubricating oil positively flows out of the sampling pipe to the external oil receiving or pumping device. Wherein the balls may also be rollers. Sealing performance is further improved, and sealing rings 19 and 18 are arranged at two ends of the sampling interface, which are close to the inlet flow passage 23 and the outlet flow passage 22.

The dust cap 4 has an internal thread and can be screwed with the external thread on the outlet flow channel side of the sampling interface 14, so that the sampling interface can be sealed and dust can be prevented from falling when the sampling is not carried out. For avoiding the shield to lose in the use, the utility model discloses sampling device still includes linking piece 2, linking post 1, chain 3. The linking column 1 is arranged on the dust cover 4, and 2 linking pieces 2 are respectively sleeved on the linking column 1 and the sampling interface 14. One end of the chain 3 is arranged at the sampling interface 14, and the other end is connected with the linking piece 2. In this way, the dust cap 4 is hung on the sampling port 14 by the link plate 2, the link column 1, and the chain 3.

The utility model discloses sampling device still includes sampling joint 15. The sampling joint 15 is connected to the sampling connection 14 when oil is taken. When in on-line sampling, the dust cap 4 is unscrewed, the sampling joint 15 with the internal thread is screwed on the sampling interface 14 with the external thread, the sampling joint 15 is provided with the thimble 17, the thimble 17 is hollow inside, and one end of the inside is grooved, such as a linear groove, and one end of the outside is used for draining the oil sample to the sampling bottle through the linear groove serving as an oil flow channel through the connecting hose or is used for draining the oil sample to the manual suction device and the sampling bottle through the connecting hose. The thimble 17 is fixed on the sampling joint 15 through a clamp spring 16. After the on-line sampling is completed, the sampling head 15 can be unscrewed for storage, and then the dust cap 4 is screwed onto the sampling interface 14.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The purpose of the utility model is completely and effectively realized. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. The lubricating oil online sampling device is characterized by comprising a device body, a transition connecting piece, an oil level indicator, a sampling interface, a dustproof cover and a sampling pipe; one end of the inner side of the device body is connected with the transition connecting piece, the transition connecting piece is used for being arranged on equipment to be sampled, and the outer end of the device body is connected with the oil level indicator; the sampling interface is arranged on the device body, one end of the sampling interface is connected with a sampling tube, and the sampling tube is inserted into equipment to be sampled through the transition connecting piece after extending into the device body; the dustproof cover is used for sealing the sampling interface; the sampling interface is internally provided with a spring and a ball, the spring is used for propping the ball to realize sealing when oil is not taken, and the ball is propped open when the oil is taken.

2. The online lubricating oil sampling device of claim 1, further comprising a sampling joint; the sampling joint is connected with the sampling interface when oil is taken; the sampling joint is provided with an ejector pin which is hollow inside and provided with a groove at one end inside, and the ejector pin is fixed on the sampling joint through a clamp spring.

3. The on-line lubricating oil sampling device of claim 2, wherein the slot is a straight slot.

4. The online lubricating oil sampling device of claim 1, further comprising a locking ring, a first sealing ring; the connecting part of the transition connecting piece and the equipment to be sampled is locked by a locking ring and sealed by a first sealing ring sleeved outside the locking ring.

5. The on-line lubricating oil sampling device of claim 1, wherein the oil level indicator is a transparent resin oil level indicator.

6. The on-line lubricating oil sampling device of claim 1, wherein the oil level gauge is provided with screw plugs at the upper part and the lower part respectively, and the ends of the two screw plugs positioned inside the oil level gauge are provided with a positive magnet and a negative magnet respectively and used for adsorbing iron impurities in oil.

7. The online lubricating oil sampling device of claim 1, wherein a boss is arranged at one end of the inside of the oil level indicator, a sealing groove for placing the second sealing ring is arranged in the boss, and the end of the oil level indicator with the boss is assembled on the device body in a pressing and sealing manner through a large nut.

8. The on-line lubricating oil sampling device of claim 1, further comprising a linking piece, a linking column, and a chain; the link column is arranged on the dustproof cover, and the link sheet is sleeved on the link column; one end of the chain is arranged at the sampling interface, and the other end of the chain is connected with the linking piece.

9. The on-line sampling device for lubricating oil of claim 1, wherein the end of the sampling tube is bent in a direction of being inserted into the device to be sampled.