CN212130957U

CN212130957U - Device for detecting oil leakage of mine hydraulic station

Info

Publication number: CN212130957U
Application number: CN202020279839.4U
Authority: CN
Inventors: 王中举; 赵辉; 李东辉; 王云庆; 王家栋
Original assignee: Six Coal Mines Of Inner Mongolia Pingzhuang Energy Co ltd
Current assignee: Six Coal Mines Of Inner Mongolia Pingzhuang Energy Co ltd
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-12-11
Anticipated expiration: 2030-03-09

Abstract

The utility model provides a detect mine hydraulic pressure station oil leak device, it includes dual contact tongue tube switch, cavity pipe fitting, hollow magnetic part, spacing dop and outer pillar. The double-contact reed switch is located inside the hollow pipe fitting, the hollow pipe fitting is located inside the outer protecting pipe, the magnetic part is connected with the outer wall of the hollow pipe fitting and located inside the outer protecting pipe, the limiting clamping head is fixedly connected with the lower end of the hollow pipe fitting, and the lower surface of the flange plate is fixedly connected with the upper end of the outer protecting pipe. The cavity pipe fitting includes top tube, well pipe and low tube, the threaded connection head of top tube first end and the hole fixed connection of ring flange, and the threaded connection head of top tube second end passes through the internal thread fixed connection of joint seal ring and well pipe first end, and the internal thread of well pipe second end passes through the threaded connection head fixed connection of joint seal ring and the first end of low tube. The utility model discloses simple structure, the low price, it is convenient to maintain, has certain practical application and worth.

Description

Device for detecting oil leakage of mine hydraulic station

Technical Field

The utility model relates to a detection device field, in particular to detect mine hydraulic pressure station oil leak device.

Background

At present, an oil level alarm device or an oil leakage detection device is not installed in a hydraulic station used up and down a mine before leaving a factory, so that technical and potential safety hazards exist in the hydraulic station, particularly, if an oil pipe sealing ring of a disc brake of a hoist leaks oil seriously, a driver cannot find out in time, lifting loading equipment stops running, normal production of the equipment is influenced, and personal safety is also influenced.

Meanwhile, the loading system of the main hoist in the mine also has the problem that the oil level in the oil tank of the hydraulic station of the underground loading system is normal, so that the oil circuit can be ensured to be smooth, and the oil pump can normally work. The oil pump system of the hydraulic station directly controls the opening and closing of the reversing valve of the loading gate, and if the oil level of the hydraulic station is too low, the oil pump cannot work normally, so that the gate driven by a hydraulic oil cylinder of the loading system cannot be opened normally. Coal cannot be loaded into the lifting skip, normal coal lifting of a main lifting system can be influenced, and the whole mine production task is influenced.

Because an oil pipe or a sealing ring of the hydraulic station is damaged, maintenance personnel and operating equipment personnel cannot find out the problem of oil leakage in time, and the hydraulic pump cannot work normally; the unloading gate connected with the hydraulic oil cylinder cannot be opened in time, lifting of coal is affected, and when oil shortage is serious, new oil needs to be added by maintenance personnel, so that a large amount of hydraulic oil is wasted, and cost is affected. The time for treating the oil leakage problem of the hydraulic station is about 1 hour each time, a 27 skip bucket of raw coal is lifted according to normal time per hour, 9.5 tons of raw coal are lifted by the skip bucket each time, and 256.5 tons of raw coal are slightly lifted after 1 hour treatment. Seriously affecting the completion of the mine production task. Therefore, it is urgently needed to design a device for detecting oil leakage of a mine hydraulic station, and the device can also realize the function of remotely monitoring the running state of the hydraulic station by installing an oil level audible and visual alarm device. The safe and stable operation of the mine hoisting and loading system is ensured.

SUMMERY OF THE UTILITY MODEL

The problem to mine hydraulic pressure station exists now, the utility model provides a detect mine hydraulic pressure station oil leak device mainly is in order to carry out timely detection to hydraulic pressure station oil leak to carry out timely maintenance, guarantee the healthy steady operation in hydraulic pressure station. The occurrence of accidents is reduced, and unnecessary loss is reduced for enterprises.

The utility model provides a detect mine hydraulic pressure station oil leak device, it includes dual contact tongue tube switch, terminal box, ring flange, cavity pipe fitting, hollow magnetic part, spacing dop and outer pillar. The double-contact reed switch is located inside the hollow pipe fitting, the junction box is located at the upper end of the hollow pipe fitting, a connecting wire of the double-contact reed switch penetrates through the junction box and is located outside the whole device, the first end of the hollow pipe fitting is connected with the junction box, the second end of the hollow pipe fitting penetrates through the inner hole of the flange plate and is located inside the outer protective pipe, the hollow magnetic part is sleeved on the outer wall of the hollow pipe fitting and is located inside the outer protective pipe, the limiting clamp head is fixedly connected with the second end of the hollow pipe fitting and is located inside the outer protective pipe, an oil inlet is formed in the bottom surface of the lower end of the outer protective pipe, a filter screen is arranged at the oil inlet, an air vent is formed in the side face of the upper end of the outer protective pipe, and the lower surface of the. The cavity pipe fitting is the combination pipe fitting, can highly come the combined use according to different hydraulic tank, and it includes top tube, well pipe and low tube, the top tube with well pipe is equipped with the cylinder through-hole, the low tube is blind section of thick bamboo, the last lower extreme of top tube with the upper end of low tube all is equipped with threaded connection head, the hole at the both ends of well pipe is equipped with the screw thread, the threaded connection head of the upper end of top tube with the hole fixed connection of ring flange, the threaded connection head of the lower extreme of top tube through connect seal ring with the internal thread fixed connection of the first end of well pipe, the internal thread of well pipe second end pass through connect seal ring with the threaded connection head fixed connection of the upper. The first end of the double-contact reed switch is connected with the input end of the alternating current circuit, the second end of the double-contact reed switch is connected with the first end of the change-over switch, the second end of the change-over switch is connected with the first end of the intermediate relay coil, and the second end of the intermediate relay coil is connected with the output end of the alternating current circuit; the first end of the normally open contact of the intermediate relay is connected with the input end of the alternating current circuit, the second end of the normally open contact of the intermediate relay is connected with the first end of the acousto-optic alarm element, and the second end of the acousto-optic alarm element is connected with the output end of the alternating current circuit.

Preferably, the axes of the flange, the hollow pipe, the magnetic member and the outer protection pipe are on the same straight line, and the axes of the upper pipe, the middle pipe and the lower pipe are on the same straight line.

Preferably, the internal diameter of magnetic part is less than the external diameter of cavity pipe fitting, the external diameter of magnetic part is less than the internal diameter of outer pillar, the external diameter of ring flange with the external diameter of outer pillar upper end equals, the diameter of filter screen with the diameter of inlet port equals, the upper tube the well pipe with the external diameter size of low tube equals, the external diameter of threaded connection head with the internal diameter of well pipe equals, the diameter that connects seal ring is less than the diameter of cavity pipe fitting, the internal diameter of spacing dop with the external diameter of cavity pipe fitting equals.

Preferably, the length of the hollow pipe member inside the outer protecting pipe is less than that of the outer protecting pipe, and the path of the magnetic member is less than that of the hollow pipe member.

Preferably, the double-contact reed switch consists of a first reed switch and a second reed switch, the first reed switch and the second reed switch are connected in parallel and are provided with a shared input end and two output ends, and the position of the double-contact reed switch is adjusted according to the requirement of a user on the oil level of the hydraulic station.

Preferably, the outer protecting pipe is an iron pipe with the diameter of 3 inches.

Preferably, the length dimension of the middle pipe has various specifications and can be determined according to the size of an oil tank of an actual hydraulic station.

Preferably, the opening and closing signals of the normally open contact of the intermediate relay are transmitted to the converter, the converter converts the opening and closing signals of the normally open contact of the intermediate relay into RS485 signals and transmits the RS485 signals to the first optical transceiver, the first optical transceiver converts the RS485 signals into optical signals and accesses the optical signals into the second optical transceiver through optical fibers, the second optical transceiver converts the optical signals into the RS485 signals and transmits the RS485 signals to the substation automatic communication substation, the communication substation packages and uploads the RS485 signals to the dispatching host, the dispatching host displays the signals through a force controller 6.0, and the SOE time report forms and records the records in the same time, and the dispatching host issues the signals through the web and accesses the web through a mine local area network.

The utility model has the advantages of as follows:

1. the utility model is arranged in the oil tank of the hydraulic station, thereby ensuring that the hydraulic station system of the elevator and the main shaft loading hydraulic station operate more stably, and reducing the phenomena of oil leakage and equipment outage; after the protection device is installed, the safety lifting of personnel and coal is ensured, and the occurrence of the influence time of equipment interruption is reduced, so that the defect problem existing before equipment is solved.

2. The hollow pipe is designed into a combined form, so that the hydraulic oil tank can adapt to hydraulic oil tanks with different specifications, and the application range is wider; two reed switch contacts are adopted, so that after one is damaged, the other can continue to work, and the reliability of the whole device is ensured; the oil pressure generated by an oil return pipe when the hydraulic pump works is prevented from causing unstable oil surface and influencing the accuracy and the service life of the hollow magnetic part, and the magnetic floating ball and the hollow pipe fitting are placed in the protective pipe, so that the measurement accuracy of the whole device is improved, and the service lives of the hollow magnetic part and the hollow pipe fitting are prolonged; the whole device is simple in structure, safe and reliable, all used parts are common mechanical parts, the price is low, the installation is simple, the maintenance is convenient, the disassembly, the assembly and the maintenance are convenient, certain practical application value is achieved, the cost is saved, and the value is created for enterprises.

3. The utility model discloses a remote monitoring function has brought the convenience for lifting machine driver and electric tong worker maintainer, has guaranteed the operation of colliery lifting means system's safety and stability, reduces the emergence of accident.

Drawings

FIG. 1 is a schematic structural view of the device for detecting oil leakage in a mine hydraulic station of the present invention;

FIG. 2 is a schematic view of the internal structure of the device for detecting oil leakage in a hydraulic station of a mine;

fig. 3 is a schematic structural view of a hollow pipe fitting of the device for detecting oil leakage of the mine hydraulic station of the utility model;

FIG. 4 is a circuit diagram of a switch of a double-contact reed switch of the device for detecting oil leakage of the hydraulic station of the mine;

FIG. 5 is a circuit diagram of the acousto-optic alarm element of the device for detecting oil leakage of the hydraulic station of the mine; and

fig. 6 is the utility model discloses detect the electric schematic diagram of hydraulic pressure station oil level remote monitoring of mine hydraulic pressure station oil leak device.

The main reference numbers:

the double-contact reed switch comprises a double-contact reed switch 1, a junction box 2, a flange plate 3, a hollow pipe fitting 4, an upper pipe 41, a middle pipe 42, a lower pipe 43, a hollow magnetic part 5, a first reed contact switch 61, a second reed contact switch 62, a limiting chuck 7, an outer protective pipe 8, an air vent 81, an oil inlet 82, a joint sealing washer 9, a filtering net 10, a change-over switch 11, an intermediate relay 12, a normally open contact 121 of the intermediate relay and an audible and visual alarm element 13.

Detailed Description

The technical contents, structural features, and achieved objects and effects of the present invention will be described in detail with reference to the accompanying drawings.

A device for detecting oil leakage of a mine hydraulic station is shown in figures 1 and 2 and comprises a double-contact reed switch 1, a junction box 2, a flange plate 3, a hollow pipe fitting 4, a magnetic part 5, a limiting clamp 7 and an outer protecting pipe 8.

As shown in fig. 2, the double-contact reed switch 1 is located inside the hollow pipe fitting 4, the junction box 2 is located at the upper end of the hollow pipe fitting 4, the connecting wire of the double-contact reed switch 1 penetrates through the junction box 2 to be located outside the whole device, the first end of the hollow pipe fitting 4 is connected with the junction box 2, the second end of the hollow pipe fitting 4 penetrates through the inner hole of the flange plate 3 to be located inside the outer protection pipe 8, the hollow magnetic part 5 is sleeved on the outer wall of the hollow pipe fitting 4 and located inside the outer protection pipe 8, and the limiting clamp 7 is fixedly connected with the second end of the lower end of the hollow pipe fitting 4 and located inside the outer protection pipe 8.

The bottom surface of outer pillar 8 lower extreme is equipped with inlet port 82, and inlet port 82 department is equipped with filter screen 10, and the side of outer pillar 8 upper end is equipped with air vent 81, and air vent 81 mainly prevents that the inside gas or the oil foam of pipe from producing, influences oil level warning accuracy, and the lower surface of ring flange 3 and the upper end fixed connection of outer pillar 8, outer pillar 8 mainly are in order to prevent that the oil pressure that produces in the oil tank from causing the damage to sensor magnetic part 5, reduces the malfunction of oil level sensor. The outer protecting pipe 8 is made of an iron pipe with the diameter of 3 inches.

Hollow pipe fitting 4 is the combination pipe fitting, as shown in fig. 3, can come the combined use according to different hydraulic tank's height, it includes top tube 41, well pipe 42 and low tube 43, top tube 41 and well pipe 42 are the cylinder through-hole, low tube 43 is the blind tube, the last lower extreme of top tube 41 and the upper end of low tube 43 all are equipped with the threaded connection head, the hole at well pipe 42 both ends is equipped with the screw thread, the threaded connection head of the upper end of top tube 41 and the hole fixed connection of flange 3, the threaded connection head of the lower extreme of top tube 41 passes through the internal thread fixed connection of joint seal ring 9 and well pipe 42 first end, the internal thread of well pipe 42 second end passes through the threaded connection head fixed connection of the upper. The length of the middle tube 42 has various specifications and can be determined according to the size of the oil tank of the actual hydraulic station.

As shown in fig. 4, the double-contact reed switch 1 is composed of a first reed switch 61 and a second reed switch 62, the first reed switch 61 and the second reed switch 62 are connected in parallel and are provided with a common input end and two output ends, and the position of the double-contact reed switch 1 is adjusted according to the requirement of the oil level of the hydraulic station. The first end of the double-contact reed switch 1 is connected with the input end of the alternating current circuit, the second end of the double-contact reed switch 1 is connected with the first end of the change-over switch 11, the second end of the change-over switch 11 is connected with the first end of the coil of the intermediate relay 12, and the second end of the coil of the intermediate relay 12 is connected with the output end of the alternating current circuit.

As shown in fig. 5, the first end of the normally open contact 121 of the intermediate relay is connected with the input end of the alternating current circuit, the second end of the normally open contact 121 of the intermediate relay is connected with the first end of the acousto-optic alarm element 13, the second end of the acousto-optic alarm element 13 is connected with the output end of the alternating current circuit, when oil leakage occurs in the oil pipe of the hydraulic station, the hollow magnetic part 5 in the oil tank is overlapped with the double-contact reed switch 1 in the hollow pipe fitting 4, the intermediate relay 12 is attracted, and the acousto-optic alarm element 13 sends out an acousto-optic alarm signal.

As shown in fig. 6, the opening and closing signal of the normally open contact of the intermediate relay is transmitted to the converter, the converter converts the opening and closing signal of the normally open contact of the intermediate relay into an RS485 signal, and transmits the RS485 signal to the first optical transceiver, the first optical transceiver converts the RS485 signal into an optical signal, and accesses the optical signal into the second optical transceiver through an optical fiber, the second optical transceiver converts the optical signal into the RS485 signal, and transmits the RS485 signal to the substation automation communication substation, the communication substation packages and uploads the RS485 signal to the scheduling host, the scheduling host displays the time report through power control, records the history, issues the web, serves as an office computer of a client, and accesses the web through a local area network.

As shown in fig. 2, the axes of the flange 3, the hollow pipe 4, the magnetic member 5 and the outer protection pipe 8 are on the same straight line, and the axes of the upper pipe 41, the middle pipe 42 and the lower pipe 43 are on the same straight line.

The inner diameter of the magnetic part 5 is smaller than the outer diameter of the hollow pipe fitting 4, the outer diameter of the magnetic part 5 is smaller than the inner diameter of the outer protecting pipe 8, the outer diameter of the flange plate 3 is equal to the outer diameter of the upper end of the outer protecting pipe 8, the diameter of the filter screen 10 is equal to the diameter of the oil inlet 82, as shown in fig. 3, the outer diameters of the upper pipe 41, the middle pipe 42 and the lower pipe 43 are equal, the outer diameter of the threaded connector is equal to the inner diameter of the middle pipe 42, the diameter of the connector sealing gasket 9 is smaller than the diameter of the hollow pipe fitting 4, and the inner.

The length of the hollow pipe fitting 4 inside the outer protecting pipe 8 is smaller than that of the outer protecting pipe 8, and the moving distance of the magnetic member 5 is smaller than that of the hollow pipe fitting 4.

It is right to combine the embodiment below the utility model relates to a detect mine hydraulic pressure station oil leak device does further description:

the utility model discloses the knot is before using, earlier according to the hydraulic tank's that will install the oil leak device specification, select the well pipe 42's that length is fit for size, then, with the threaded connection head of the upper end of well pipe 41 and the hole fixed connection of ring flange 3, the threaded connection head of the lower extreme of going up pipe 41 passes through the internal thread fixed connection of joint seal ring 9 and well pipe 42 first end, the threaded connection head fixed connection of the upper end of passing through joint seal ring 9 and low pipe 43 with the internal thread of well pipe 42 second end, constitute the cavity pipe fitting 4 that is suitable for this oil tank, because go up pipe 41, well pipe 42 equals with the external diameter size of low pipe 43, thereby can not influence the motion of magnetic part 5, guarantee the measuring accuracy nature of.

After the hollow pipe 4 is sized, the first reed switch 61 and the second reed switch 62 are connected in parallel and have a common input and two outputs, and the position of the double-contact reed switch 1 inside the hollow pipe 4 is adjusted according to the user's requirement for the oil level of the hydraulic station, and the input and the output are left outside the hollow pipe 4.

The first end of the double-contact reed switch 1 is connected with the input end of the alternating current circuit, the second end of the double-contact reed switch 1 is connected with the first end of the change-over switch 11, the second end of the change-over switch 11 is connected with the first end of the coil of the intermediate relay 12, and the second end of the coil of the intermediate relay 12 is connected with the output end of the alternating current circuit. If the first reed switch 61 is damaged and cannot work, the second reed switch 62 works by switching the change-over switch 11, so that the replacement time is shortened, and the working efficiency is improved.

Finally, the double-contact reed switch 1 is placed inside the hollow pipe fitting 4, the first end of the hollow pipe fitting 4 is connected with the junction box 2, the second end of the hollow pipe fitting 4 penetrates through the inner hole of the flange plate 3 to be located inside the outer protection pipe 8, the magnetic part 5 is connected with the outer wall of the hollow pipe fitting 4 to be located inside the outer protection pipe 8, and the limiting clamp 7 is fixedly connected with the second end of the lower end of the hollow pipe fitting 4 to be located inside the outer protection pipe 8.

After the oil leakage device of the mine hydraulic station is detected, the inside of a hydraulic oil tank is put into the oil leakage device of the mine hydraulic station, after the oil level in the hydraulic oil tank is reduced to a certain height when the magnetic part 5 is contacted with the double-contact reed switch 1, the switch contact of the double-contact reed switch 1 is closed, the coil attraction of the intermediate relay 12 is realized, the normally open contact 121 of the intermediate relay is closed, the acousto-optic alarm element 13 is enabled to start alarming, the normally open contact 121 of the intermediate relay is closed, the remote communication equipment is used for transmitting the oil leakage information of the hydraulic oil station to a mainframe room, the quick overhaul is realized, and unnecessary danger and loss are reduced.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a detect mine hydraulic pressure station oil leak device, its includes dual contact tongue tube switch, terminal box, ring flange, cavity pipe fitting, magnetic part, spacing dop and outer pillar, its characterized in that:

the double-contact reed switch is positioned in the hollow pipe fitting, the junction box is positioned at the upper end of the hollow pipe fitting, a connecting wire of the double-contact reed switch penetrates through the junction box, the first end of the hollow pipe fitting is connected with the junction box, the second end of the hollow pipe fitting penetrates through an inner hole of the flange plate and is positioned in the outer protective pipe, the magnetic part is sleeved on the outer wall of the hollow pipe fitting and is positioned in the outer protective pipe, the limiting clamp head is fixedly connected with the second end of the hollow pipe fitting and is positioned in the outer protective pipe, an oil inlet hole is formed in the bottom surface of the lower end of the outer protective pipe, a filter screen is arranged at the oil inlet hole, an air vent is formed in the side surface of the upper end of the outer protective pipe, and the lower surface of the;

the hollow pipe fitting is a combined pipe fitting and comprises an upper pipe, a middle pipe and a lower pipe, wherein the upper pipe and the middle pipe are provided with cylindrical through holes, the lower pipe is a blind cylinder, the upper end and the lower end of the upper pipe and the upper end of the lower pipe are respectively provided with a threaded connector, inner holes at two ends of the middle pipe are provided with threads, the threaded connector at the upper end of the upper pipe is fixedly connected with an inner hole of the flange plate, the threaded connector at the lower end of the upper pipe is fixedly connected with an inner thread at the first end of the middle pipe through a joint sealing washer, and an inner thread at the second end of the middle pipe is fixedly connected; and

the first end of the double-contact reed switch is connected with the input end of the alternating current circuit, the second end of the double-contact reed switch is connected with the first end of the change-over switch, the second end of the change-over switch is connected with the first end of the coil of the intermediate relay, and the second end of the coil of the intermediate relay is connected with the output end of the alternating current circuit; the first end of the normally open contact of the intermediate relay is connected with the input end of the alternating current circuit, the second end of the normally open contact of the intermediate relay is connected with the first end of the acousto-optic alarm element, and the second end of the acousto-optic alarm element is connected with the output end of the alternating current circuit.

2. The apparatus of claim 1, wherein the flange, the hollow pipe, the magnetic member and the outer protecting pipe have axes on a same straight line, and the upper pipe, the middle pipe and the lower pipe have axes on a same straight line.

3. The device for detecting oil leakage of the mine hydraulic station as claimed in claim 1 or 2, wherein the inner diameter of the magnetic member is smaller than the outer diameter of the hollow pipe fitting, the outer diameter of the magnetic member is smaller than the inner diameter of the outer protecting pipe, the outer diameter of the flange is equal to the outer diameter of the upper end of the outer protecting pipe, the diameter of the filter screen is equal to the diameter of the oil inlet hole, the outer diameters of the upper pipe, the middle pipe and the lower pipe are equal, the outer diameter of the threaded connector is equal to the inner diameter of the middle pipe, the diameter of the joint sealing washer is smaller than the diameter of the hollow pipe fitting, and the inner diameter of the limiting chuck is equal to the outer diameter of the hollow.

4. The apparatus of claim 1, wherein the hollow tube is located inside the outer sheath for a length less than the length of the outer sheath, and the magnetic member moves for a distance less than the length of the hollow tube.

5. The device for detecting oil leakage of a mine hydraulic station as claimed in claim 1, wherein the dual-contact reed switch comprises a first reed switch and a second reed switch, and the first reed switch and the second reed switch are connected in parallel and are provided with a common input end and two output ends.