Corrugated pipe oil level alarm device and corrugated inner oil type oil conservator

Abstract

According to the corrugated pipe oil level alarm device and the corrugated inner oil type oil conservator, an upper travel switch body is installed on the upper portion of an installation rod, one end of an upper trigger rod is connected with the upper travel switch body, the other end of the upper trigger rod is located above a corrugated pipe, and a lower travel switch body is installed on the lower portion of the installation rod. One end of the lower trigger rod is connected with the lower travel switch body, and the other end of the lower trigger rod is positioned in the middle of a gap between two adjacent sections of corrugations of the corrugated pipe; one end of the high-oil-level contact and one end of the low-oil-level contact are connected with the common end of the junction box, the other end of the high-oil-level contact and the other end of the low-oil-level contact are connected with the junction box terminal, and the junction box terminal is connected with the high-oil-level sound-light alarm mechanism and the low-oil-level sound-light alarm mechanism. The corrugated pipe oil level alarm device is applied to the corrugated inner oil type oil conservator. According to the utility model, the normally open contact in the travel switch is ingeniously utilized, and the oil level of the corrugated pipe is accurately monitored and alarmed in real time.

Description

TECHNICAL FIELD

[0001] The utility model discloses a corrugated pipe oil level alarm device and corrugated inner oil type oil conservator belongs to the technical field of oil conservator. BACKGROUND

[0002] The oil conservator is located at the upper portion of the transformer oil tank and is also called an oil pillow, and is a container communicated with the transformer oil tank to adapt to the volume change of the transformer oil in the oil tank. The corrugated oil conservator is a substitute product of the capsule type oil conservator and is widely applied to oil-immersed power transformers of various voltage grades and can realize the compensation requirement of the oil volume change caused by the environmental change.

[0003] The existing corrugated inner oil type oil conservator is made of a corrugated pipe, and the transformer oil is filled in the corrugated pipe. Once the oil level of the transformer oil in the corrugated pipe is too high, the corrugated pipe is excessively expanded, the risk of the core body of the corrugated pipe is out of limit range expansion, and the core body of the corrugated pipe can be damaged. Once the oil level is too low, the compensation adjustment of the transformer oil in the transformer oil tank is affected.

[0004] The oil level indicating mechanism of the existing corrugated inner oil type oil conservator is located at the upper portion of the transformer, and the oil level reading is not conducive to observation at night, and the oil level condition of the transformer oil in the corrugated pipe cannot be understood in time. Therefore, in order to better cope with the potential risks that may exist in the transformer oil system, it is necessary to develop a corrugated pipe oil level alarm device to realize early warning and alarm. SUMMARY

[0005] In order to solve the above technical problems, the utility model discloses a corrugated pipe oil level alarm device and corrugated inner oil type oil conservator. The technical scheme adopted by the utility model is:

[0006] The utility model relates to a corrugated tube oil level alarm device, including installation rod, upper stroke switch, lower stroke switch, cable and audible -visual alarm mechanism, installation rod fixedly installs one side of corrugated tube, and the upper part and lower part of installation rod are opened upper installation hole and lower installation hole respectively, and the upper stroke switch includes upper stroke switch body and upper trigger rod, and the upper stroke switch body is fixedly installed in the upper installation hole, and one end of the upper trigger rod is fixedly connected with the upper stroke switch body, and the other end of the upper trigger rod is located above the corrugated tube, and the lower stroke switch includes lower stroke switch body and lower trigger rod, and the lower stroke body is fixedly installed in the lower installation hole, and one end of the lower trigger rod is fixedly connected with the lower stroke switch body, and the other end of the lower trigger rod is located in the gap between the adjacent two corrugations of corrugated tube, the inside of the upper stroke switch body is provided with the normally open high oil level contact, the inside of the lower stroke switch body is provided with the normally open low oil level contact, one end of high oil level contact and low oil level contact are electrically connected with the common end of terminal box through cable respectively, and the other end of high oil level contact and low oil level contact is electrically connected with the terminal end of terminal box through cable respectively, and the terminal end of terminal box is electrically connected with high oil level audible -visual alarm mechanism and low oil level audible -visual alarm mechanism respectively.

[0007] Preferably, the low oil level audible -visual alarm mechanism includes power supply one, low oil level alarm lamp and low oil level alarm loudspeaker connected in series, power supply one is electrically connected with the common end of terminal box, and low oil level alarm loudspeaker is electrically connected with the terminal end of terminal box.

[0008] Preferably, the high oil level audible -visual alarm mechanism includes power supply two, high oil level alarm lamp and high oil level alarm loudspeaker connected in series, power supply two is electrically connected with the common end of terminal box, and high oil level alarm loudspeaker is electrically connected with the terminal end of terminal box.

[0009] Preferably, the installation rod includes base and vertical rod, and the base is provided with bolt fixing hole and wiring opening, the base is fixedly installed on one side of corrugated tube by screwing through bolt fixing hole, and the length of vertical rod is selected according to the upper and lower limit stroke of oil level alarm, and the bottom end of vertical rod is fixedly installed on the base by welding or screwing.

[0010] A corrugated inner oil type oil storage tank applies the corrugated tube oil level alarm device, and the utility model relates to a corrugated tube oil level alarm device, including the oil storage tank shell of cubic structure, and the length direction inside of oil storage tank shell is installed in parallel a plurality of corrugated tubes, and the installation rod is fixedly installed in the clearance of adjacent corrugated tube.

[0011] The utility model has the advantages of:

[0012] The utility model discloses a simple and convenient structure, cost-effective, high reliability and safety in practical application, and fully meets the strict requirements of real-time accurate monitoring of the oil level of the corrugated oil tank. BRIEF DESCRIPTION OF DRAWINGS

[0013] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with the embodiments of the utility model, and do not constitute the limitation to the utility model.

[0014] Figure 1 It is the structure schematic diagram of the travel switch of the utility model embodiment one;

[0015] Figure 2 It is the circuit connection schematic diagram of the oil level alarm device of the utility model embodiment one;

[0016] Figure 3 It is the structure schematic diagram of the oil tank of the utility model embodiment two;

[0017] In the figure, 1 is the mounting rod, 2 is the upper travel switch body, 3 is the upper trigger rod, 4 is the lower travel switch body, 5 is the lower trigger rod, 6 is the cable, 7 is the oil tank junction box, 8 is the junction box common end, 9 is the junction box wiring end, 10 is the high oil level contact, 11 is the low oil level contact, 12 is the power supply one, 13 is the low oil level alarm lamp, 14 is the low oil level alarm loudspeaker, 15 is the power supply two, 16 is the high oil level alarm lamp, 17 is the high oil level alarm loudspeaker, 18 is the oil tank shell, 19 is the corrugated pipe. DETAILED DESCRIPTION

[0018] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, and obviously, the described embodiments are a part of the embodiments of the utility model, not all the embodiments. Embodiment one

[0019] As Figure 1 , 2As shown, a corrugated pipe oil level alarm device, comprising: mounting rod 1, upper travel switch, lower travel switch, cable 6 and sound and light alarm mechanism. Among them, the mounting rod 1 includes a base and a vertical rod, the base has bolt fixing hole and wiring opening, the base is fixedly installed on one side of the corrugated pipe by the bolt passing through the bolt fixing hole, the base is used for fixedly installing the vertical rod and for wiring. The length of the vertical rod is selected according to the upper and lower limit travel of the oil level alarm, the bottom end of the vertical rod is welded or bolted to be fixedly installed on the base, the upper and lower parts of the vertical rod are respectively provided with upper and lower mounting holes. The upper travel switch comprises an upper travel switch body 2 and an upper trigger rod 3, the upper travel switch body 2 is fixedly installed in the upper mounting hole of the vertical rod by a bolt, one end of the upper trigger rod 3 is fixedly connected with the upper travel switch body 2, and the other end of the upper trigger rod 3 is located above the upper surface of the corrugated pipe; the lower travel switch comprises a lower travel switch body 4 and a lower trigger rod 5, the lower travel switch body 4 is fixedly installed in the lower mounting hole of the vertical rod by a bolt, one end of the lower trigger rod 5 is fixedly connected with the lower travel switch body 4, and the other end of the lower trigger rod 5 is located in the gap between the adjacent two corrugations of the corrugated pipe.

[0020] The travel switch is a mechanical electrical switching element, belongs to passive signal, and is switched by mechanical operation. The travel switch can normally work without external power supply. The inner part of the upper travel switch body 2 is respectively provided with two groups of contacts, which are a normally open high oil level contact 10 and a normally closed contact one. The inner part of the lower travel switch body 4 is respectively provided with two groups of contacts, which are a normally open low oil level contact 11 and a normally closed contact two. In the embodiment of the utility model, the normally open contact is selected for wiring, and the trigger rod changes the normally open circuit into a normally closed circuit under the external force, so that the alarm circuit of the background monitoring system is conducted to sound and light alarm.

[0021] The main function of the cable 6 is to connect the travel switches and the sound and light alarm mechanism, and is connected to the terminal in the oil tank terminal box 7. One end of the high oil level contact 10 and one end of the low oil level contact 11 are respectively connected to the terminal box common end 8 through the cable 6, and the other end of the high oil level contact 10 and the other end of the low oil level contact 11 are respectively connected to the terminal box terminal end 9 through the cable 6. The other end of the low oil level contact 11 is electrically connected to the low oil level sound and light alarm mechanism through the terminal end 9 of the terminal box, and the low oil level sound and light alarm mechanism comprises a power supply one 12, a low oil level alarm lamp 13 and a low oil level alarm loudspeaker 14 connected in series, the power supply one 12 is electrically connected to the terminal box common end 8, and the low oil level alarm loudspeaker 14 is electrically connected to the terminal box terminal end 9. The other end of the high oil level contact 10 is electrically connected to the high oil level sound and light alarm mechanism through the terminal end 9 of the terminal box, and the high oil level sound and light alarm mechanism comprises a power supply two 15, a high oil level alarm lamp 16 and a high oil level alarm loudspeaker 17 connected in series, the power supply two 15 is electrically connected to the terminal box common end 8, and the high oil level alarm loudspeaker 17 is electrically connected to the terminal box terminal end 9.

[0022] The working process of the corrugated pipe oil level alarm device is as follows:

[0023] When the corrugated pipe runs upward to a certain stroke, the upper trigger rod 3 touches the upper surface of the top end of the corrugated pipe, and the mechanical force of the upper trigger rod 3 makes the high oil level contact 10 closed, and after the high oil level contact 10 is closed, the high oil level alarm lamp 16 and the high oil level alarm loudspeaker 17 in the back-end are connected through the terminal in the oil tank junction box 7, that is, the high oil level alarm of the corrugated pipe is triggered (the high oil level refers to the oil level reaching 95%); when the corrugated pipe runs downward to a certain stroke, the lower trigger rod 5 touches the corrugation of the corrugated pipe, and the mechanical force of the lower trigger rod 5 makes the low oil level contact 11 closed, and after the low oil level contact 11 is closed, the low oil level alarm lamp 13 and the low oil level alarm loudspeaker 14 in the back-end are connected through the terminal in the oil tank junction box 7, that is, the low oil level alarm is triggered (the low oil level refers to the oil level reaching 5%). Embodiment two

[0024] The utility model discloses a kind of corrugated inner oil type oil tanks of the corrugated pipe oil level alarm device described in embodiment one.

[0025] As shown in Figure 3 A kind of corrugated inner oil type oil tank, including the cuboid structure oil tank shell 18, the length direction inside of the oil tank shell 18 is installed several corrugated pipes 19 in parallel, and the installation rod 1 in the corrugated pipe oil level alarm device is fixedly installed at the clearance between adjacent corrugated pipes 19.

[0026] The corrugated pipe oil level alarm device described in embodiment one realizes the automatic alarm of the high and low oil filling level of the corrugated inner oil type oil tank.

[0027] In the embodiments of the present application, the technical features not described in detail are prior art or conventional technical means, which will not be described here.

[0028] Finally, it should be pointed out that: the above embodiments are only specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit it, and the protection scope of the present application is not limited to this. Those skilled in the art should understand that any person skilled in the art can modify or easily think of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed by the present application, or make equivalent replacement to some technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered in the protection scope of the present application.

Claims

1. A bellows oil level alarm device comprising a mounting rod, an upper travel switch, a lower travel switch, a cable and an audible and visual alarm mechanism, characterized in that, The installation rod is fixedly installed on one side of the bellows, the upper and lower parts of the installation rod are respectively provided with an upper installation hole and a lower installation hole, the upper travel switch comprises an upper travel switch body and an upper trigger rod, the upper travel switch body is fixedly installed in the upper installation hole, one end of the upper trigger rod is fixedly connected with the upper travel switch body, and the other end of the upper trigger rod is located above the bellows, the lower travel switch comprises a lower travel switch body and a lower trigger rod, the lower travel switch body is fixedly installed in the lower installation hole, one end of the lower trigger rod is fixedly connected with the lower travel switch body, and the other end of the lower trigger rod is located in the gap between two adjacent corrugations of the bellows, the inside of the upper travel switch body is provided with a normally open high oil level contact, the inside of the lower travel switch body is provided with a normally open low oil level contact, one end of the high oil level contact and one end of the low oil level contact are electrically connected to the common end of the junction box through cables, the other end of the high oil level contact and the other end of the low oil level contact are electrically connected to the wiring end of the junction box through cables, and the wiring end of the junction box is electrically connected to the high oil level sound and light alarm mechanism and the low oil level sound and light alarm mechanism.

2. A bellows oil level alarm device according to claim 1, wherein The low oil level sound and light alarm mechanism comprises a power supply one, a low oil level alarm lamp and a low oil level alarm loudspeaker which are sequentially connected in series, the power supply one is electrically connected to the common end of the junction box, and the low oil level alarm loudspeaker is electrically connected to the wiring end of the junction box.

3. A bellows oil level alarm as defined in claim 1, wherein The high oil level sound and light alarm mechanism comprises a power supply two, a high oil level alarm lamp and a high oil level alarm loudspeaker which are sequentially connected in series, the power supply two is electrically connected to the common end of the junction box, and the high oil level alarm loudspeaker is electrically connected to the wiring end of the junction box.

4. A bellows oil level alarm as defined in claim 1, wherein The installation rod comprises a base and a vertical rod, the base is provided with a bolt fixing hole and a wiring opening, the base is fixedly installed on one side of the bellows through the bolt fixing hole, the length of the vertical rod is selected according to the upper and lower limit travel of the oil level alarm, and the bottom end of the vertical rod is fixedly installed on the base by welding or screwing.

5. A corrugated internal oil type reservoir characterized by The application of the bellows oil level alarm device of claim 1 comprises a cubic structure oil tank shell, a plurality of bellows are installed in parallel on the inside of the length direction of the oil tank shell, and the installation rod is fixedly installed in the gap between adjacent bellows.

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