Quick-acting oil pressure relay

Abstract

The utility model discloses a quick-acting oil pressure relay, which comprises a lower seat, an upper seat is arranged at the upper part of the lower seat, connecting flanges are arranged between the upper seat and the lower seat, the upper seat and the lower seat are fixed by matching the connecting flanges with fixing bolts, a plurality of groups of wiring terminals are arranged in the upper seat, and a plurality of groups of wiring terminals are arranged in the lower seat. And a base is arranged at the bottom of the lower seat. When oil pressure in equipment changes due to faults, the corrugated pipe expands or contracts accordingly, the expansion or contraction of the corrugated pipe can drive the spring column to move up and down, then the measuring mechanism detects displacement changes, the measuring mechanism converts the displacement changes into electric signals, the electric signals are transmitted to the micro switch through the connecting plate, and the micro switch is switched on. When the displacement reaches a preset threshold value, the microswitch is triggered, an alarm signal is output to the wiring terminal through the connecting end and the wire, and after an external control system receives the alarm signal, the external control system can respond, give an alarm prompt and cut off a power supply of equipment according to preset logic so as to prevent further expansion of faults.

Description

TECHNICAL FIELD

[0001] The utility model relates to quick action oil pressure relay technical field, more specifically to a quick action oil pressure relay. BACKGROUND

[0002] Quick action oil pressure relay is a device specially designed for monitoring and protecting oil pressure changes in oil-immersed transformers, transformers and other oil-immersed power equipment. Its core function is to respond quickly to abnormal oil pressure, thereby effectively preventing equipment failure and ensuring the stable operation of the power system. Quick action oil pressure relay uses precise sensing technology and advanced signal processing algorithms to monitor the oil pressure conditions inside the equipment in real time. When the oil pressure exceeds the preset safety range, the relay will trigger an alarm or protective action immediately, cutting off the power supply or taking other necessary protective measures to prevent equipment damage or more serious safety accidents.

[0003] After reciprocating expansion and contraction, the double corrugated pipe type quick action oil pressure relay is prone to deformation and dead wrinkles, affecting the reliability of the quick action oil pressure relay. Therefore, a new technical solution is needed to solve this problem. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a quick action oil pressure relay, which solves the problem of deformation and dead wrinkles of the double corrugated pipe type quick action oil pressure relay after reciprocating expansion and contraction, affecting the reliability of the quick action oil pressure relay.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a quick action oil pressure relay, comprising: a lower seat, the upper part of the lower seat is provided with an upper seat, and the upper seat and the lower seat are both provided with a connecting flange, the upper seat and the lower seat are fixed by connecting flange cooperation fixing bolt, the inside of the upper seat is provided with several groups of terminal, the bottom of the lower seat is provided with a base, and the base is fixedly connected with the lower seat, the inside of the lower seat is provided with a pipe seat, and the lower part of the pipe seat is provided with a corrugated pipe, the lower part of the corrugated pipe is provided with an insulating plate, and the insulating plate is connected with the lower seat, the upper part of the insulating plate is provided with a cover, and the cover is embedded with the bottom of the corrugated pipe, the surface of the insulating plate is provided with an elastic retainer, the upper part of the cover is provided with a spring column, and the upper part of the spring column is provided with a sealing cover plate, the spring column is embedded with the cover and the sealing cover plate inside groove, the sealing cover plate is located in the upper part of the pipe seat and is fixed with the pipe seat through the bolt, the upper part of the sealing cover plate is provided with a connecting column, and the upper part of the connecting column is provided with a measuring mechanism, the upper part of the measuring mechanism is provided with a connecting plate, and the side of the connecting plate is provided with a micro switch, the side of the micro switch is provided with a connecting part, and the connecting part is connected with the terminal through the wire.

[0006] As an optimal implementation form of the utility model, the upper part of the upper seat is provided with an end cover, and the end cover is fixedly connected between the upper seat and the bolt.

[0007] As an optimal implementation form of the utility model, the side surface of the upper seat is provided with a wire outlet nut, and the surface of the wire outlet nut is provided with a wire protection sleeve.

[0008] As an optimal implementation form of the utility model, the corner of the base is provided with a mounting part in a semi-arc structure.

[0009] As an optimal implementation form of the utility model, the side surface of the lower seat is provided with a sewage plug, and the connecting part of the sewage plug and the lower seat is provided with a sealing ring.

[0010] As an optimal implementation form of the utility model, the other side surface of the lower seat is provided with a test port, and the inside of the test port is provided with a one-way valve.

[0011] Compared with the prior art, the utility model has the beneficial effects as follows:

[0012] The utility model discloses a lower seat's upper portion is provided with the upper seat and is provided with the connecting flange between upper seat and lower seat, and is fixed through connecting flange and fixed bolt cooperation between upper seat and lower seat, is provided with a plurality of groups of terminal blocks in the inside of upper seat, is provided with the base in the bottom of lower seat and is fixedly connected between base and lower seat, is provided with the pipe seat in the inside of lower seat and is provided with the bellows in the lower part of pipe seat, is provided with the insulating plate in the lower part of bellows and is connected between insulating plate and lower seat, is provided with the protective cover in the upper part of insulating plate and the bottom of bellows is mutually embedded in protective cover, is provided with spring post in the upper part of protective cover and is provided with the sealing cover plate in the upper part of spring post, and spring post and protective cover and sealing cover plate inside recess are mutually embedded, and sealing cover plate is located in the upper part of pipe seat and is fixed through bolt between pipe seat, is provided with the connecting column in the upper part of sealing cover plate and is provided with the measuring mechanism in the upper part of connecting column, is provided with the connecting plate in the upper part of measuring mechanism and is provided with the microswitch on the side of connecting plate, is provided with the connecting end on the side of microswitch and is connected through the wire between connecting end and terminal block, and the relay is composed of upper seat and lower seat, is closely connected through connecting flange and fixed bolt, forms a sealed cavity, and the inside of upper seat is equipped with a plurality of groups of terminal blocks, is used for connecting with external control system, transmits the alarm signal or control signal, and the bottom of lower seat is equipped with the base, provides stable support, and is equipped with the pipe seat inside, is used for installing and fixing bellows, and the bellows is installed in the lower part of pipe seat, is used for responding oil pressure change, and the insulating plate is connected with lower seat, provides electrical insulation, and the protective cover is embedded with the bottom of bellows, protects bellows from external damage, and spring post passes through protective cover and sealing cover plate, provides elastic support, and sealing cover plate is located in the upper part of pipe seat, and is fixed with pipe seat through bolt, forms a sealed cavity, and the measuring mechanism is installed on the upper part of sealing cover plate, is used for detecting the displacement of bellows, and the side of connecting plate is equipped with the microswitch, when the measuring mechanism detects the displacement of bellows, triggers microswitch, and the connecting end is connected through the wire and terminal block, transmits the signal, when the oil pressure in the equipment changes because of the fault, the bellows will expand or shrink along with it, and the expansion or shrink of bellows will drive the up-and-down movement of spring post, and then make the measuring mechanism detect displacement change, and the measuring mechanism converts displacement change into electric signal, and passes through the connecting plate and is delivered to microswitch, when displacement reaches the preset threshold value, microswitch is triggered, and the alarm signal is outputted to terminal block through connecting end and wire, and after receiving the alarm signal, external control system can respond according to the preset logic, and issues the alarm prompt, and cuts off the power supply of equipment, to prevent the fault from further expanding. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is whole structure schematic diagram of the utility model;

[0014] Figure 2 It is side view structure schematic diagram of the utility model;

[0015] Figure 3 It is cross section structure schematic diagram of the utility model.

[0016] In the figure: 1, lower seat; 2, connecting flange; 3, upper seat; 4, base; 5, mounting portion; 6, blowdown plug; 7, test port; 8, outlet nut; 9, wire cover; 10, end cover; 11, terminal; 12, connecting plate; 13, micro switch; 14, connecting portion; 15, measuring mechanism; 16, connecting column; 17, sealing cover plate; 18, pipe base; 19, corrugated pipe; 20, spring column; 21, cover; 22, insulating plate; 23, elastic check ring; 24, one-way valve. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0018] Please refer to Figures 1-3The utility model provides a technical scheme: a quick action oil pressure relay, include: lower seat 1, the upper portion of lower seat 1 is provided with upper seat 3 and is uniformly provided with the connecting flange 2 between upper seat 3 and lower seat 1, the cooperation fixed bolt of connecting flange 2 is fixed between upper seat 3 and lower seat 1, the inside of upper seat 3 is provided with several groups of terminal 11, the bottom of lower seat 1 is provided with base 4 and is fixedly connected between base 4 and lower seat 1, the inside of lower seat 1 is provided with pipe seat 18 and the lower portion of pipe seat 18 is provided with bellow 19, the lower portion of bellow 19 is provided with insulating plate 22 and is connected between insulating plate 22 and lower seat 1, the upper portion of insulating plate 22 is provided with protective cover 21 and protective cover 21 and the bottom of bellow 19 are mutually inlayed, the surface of insulating plate 22 is provided with elastic baffle 23, the upper portion of protective cover 21 is provided with spring post 20 and the upper portion of spring post 20 is provided with sealing cover plate 17, spring post 20 and protective cover 21 and sealing cover plate 17 inner groove are mutually inlayed, sealing cover plate 17 is located the upper portion of pipe seat 18 and is fixed through bolt between pipe seat 18, the upper portion of sealing cover plate 17 is provided with connecting column 16 and the upper portion of connecting column 16 is provided with measuring mechanism 15, the upper portion of measuring mechanism 15 is provided with connecting plate 12 and the side of connecting plate 12 is provided with microswitch 13, the side of microswitch 13 is provided with connecting portion 14 and connecting portion 14 is connected between wire and terminal 11, the relay is composed of upper seat 3 and lower seat 1, is closely connected through connecting flange 2 and fixed bolt, forms a sealed cavity, and the inside of upper seat 3 is provided with several groups of terminal 11, is connected with external control system, transmits alarm signal or control signal, and the bottom of lower seat 1 is provided with base 4, provides stable support, and is provided with pipe seat 18 inside, is used for installing and fixing bellow 19, bellow 19 is installed in the lower portion of pipe seat 18, is used for sensing oil pressure change, and insulating plate 22 is connected with lower seat 1, provides electrical insulation, and protective cover 21 and bellow 19 bottom inlay, protect bellow 19 from external damage, spring post 20 passes through protective cover 21 and sealing cover plate 17, provides elastic support, and sealing cover plate 17 is located the upper portion of pipe seat 18, and is bolted with pipe seat 18, forms a sealed cavity.The measuring mechanism 15 is installed on the upper part of the sealing cover plate 17 for detecting the displacement of the bellows 19, and the micro switch 13 is arranged on the side of the connecting plate 12 and is triggered when the measuring mechanism 15 detects the displacement of the bellows 19. The connecting end is connected with the terminal 11 through the wire and transmits the signal. When the oil pressure in the equipment changes due to a fault, the bellows 19 will expand or shrink accordingly. The expansion or shrinkage of the bellows 19 will drive the up-and-down movement of the spring column 20, and then the measuring mechanism 15 detects the displacement change. The measuring mechanism 15 converts the displacement change into an electrical signal and transmits it to the micro switch 13 through the connecting plate 12. When the displacement reaches the preset threshold, the micro switch 13 is triggered, and an alarm signal is output to the terminal 11 through the connecting end and the wire. After receiving the alarm signal, the external control system can respond according to the preset logic, issue an alarm prompt, and cut off the power supply of the equipment to prevent the fault from further expanding.

[0019] Further improved, as shown in Figure 1 The upper part of the upper seat 3 is provided with an end cover 10 which is fixedly connected between the end cover 10 and the upper seat 3 through bolts. The design of the end cover 10 increases the sealing and protection of the relay, prevents external dust, moisture and other impurities from entering the interior of the relay, and improves the reliability and service life of the relay.

[0020] Further improved, as shown in Figure 1 The side of the upper seat 3 is provided with a wire outlet nut 8, and the surface of the wire outlet nut 8 is provided with a wire protection sleeve 9. The design of the wire outlet nut 8 and the wire protection sleeve 9 facilitates the connection and management of the wire, and at the same time, the wire protection sleeve 9 can also protect the wire from wear and tear and improve the safety and service life of the wire.

[0021] Further improved, as shown in Figure 1 The corners of the base 4 are provided with a mounting part 5 in a semicircular structure. The semicircular mounting part 5 makes the relay more convenient and stable during installation, and also increases the aesthetics of the relay.

[0022] Further improved, as shown in Figure 1 The side of the lower seat 1 is provided with a blowdown plug 6, and the connection between the blowdown plug 6 and the lower seat 1 is provided with a sealing ring. The design of the blowdown plug 6 facilitates the cleaning and maintenance of the interior of the relay. When impurities or oil stains accumulate in the interior of the relay, they can be cleaned through the blowdown plug 6.

[0023] Further improved, as shown in Figure 3As shown: the other side of the lower seat is provided with test port 7 and the inside of test port 7 is provided with one-way valve 24, the design of test port 7 and one-way valve 24 makes the test and debugging of relay more convenient, through test port 7, the oil pressure change inside the relay can be conveniently detected, and one-way valve 24 can prevent oil backflow or leakage during the test, thereby ensuring the accuracy and safety of the test.

[0024] Working principle: the relay of the utility model is composed of upper seat 3 and lower seat 1, is tightly connected through connecting flange 2 and fixed bolt, forms a sealed cavity, a plurality of groups of wiring terminals 11 are arranged in the inside of upper seat 3, are used for connecting with external control system, transmit alarm signal or control signal, base 4 is arranged at the bottom of lower seat 1, provides stable support, pipe base 18 is arranged in the inside, is used for installing and fixing bellow 19, bellow 19 is installed at the lower part of pipe base 18, is used for sensing oil pressure change, insulation plate 22 is connected with lower seat 1, provides electrical insulation, cover 21 is embedded with the bottom of bellow 19, protects bellow 19 from external damage, spring column 20 passes through cover 21 and sealing cover plate 17, provides elastic support, sealing cover plate 17 is located at the upper part of pipe base 18, is bolted with pipe base 18, forms a sealed cavity, measuring mechanism 15 is installed at the upper part of sealing cover plate 17, is used for detecting the displacement of bellow 19, the side of connecting plate 12 is provided with micro switch 13, when measuring mechanism 15 detects the displacement of bellow 19, triggers micro switch 13, the connecting end is connected with wiring terminal 11 through wire, transmits signal, when the oil pressure in the equipment changes due to fault, bellow 19 will expand or shrink accordingly, the expansion or shrink of bellow 19 will drive the up-and-down movement of spring column 20, and then make measuring mechanism 15 detect displacement change, measuring mechanism 15 converts displacement change into electric signal, and passes through connecting plate 12 and is transmitted to micro switch 13, when the displacement reaches the preset threshold, micro switch 13 is triggered, and an alarm signal is output to wiring terminal 11 through the connecting end and wire, after the external control system receives the alarm signal, according to the preset logic, an alarm prompt is sent, and the power supply of the equipment is cut off, so as to prevent the fault from further expanding.

[0025] The above shows and describes the basic principles and main features of the present application and the advantages of the present application, and it is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0026] Finally should be noted that several points are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the term "installation", "connected", "connection" should be broad, can be mechanical or electrical connection, but also can be two elements inside the communication, can be directly connected, "up", "down", "left", "right" and so on, only for the relative position relationship, when the absolute position of the described object changes, the relative position relationship may change.

[0027] Finally should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement of the technical solutions described in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. A fast-acting hydraulic relay, characterized in that: include: The lower seat (1) has an upper seat (3) on its upper part, and a connecting flange (2) is provided between the upper seat (3) and the lower seat (1). The upper seat (3) and the lower seat (1) are fixed together by the connecting flange (2) and fixing bolts. The upper seat (3) has several sets of terminals (11) inside. The lower seat (1) has a base (4) at its bottom, and the base (4) is fixedly connected to the lower seat (1). The lower seat (1) has a pipe seat (18) inside, and a corrugated pipe (19) is provided at the lower part of the pipe seat (18). An insulating plate (22) is provided at the lower part of the corrugated pipe (19), and the insulating plate (22) is connected to the lower seat (1). A cover (21) is provided at the upper part of the insulating plate (22), and the cover (21) is fitted into the bottom of the corrugated pipe (19). (22) has an elastic retaining ring (23) on its surface. The upper part of the cover (21) has a spring post (20) and a sealing cover plate (17) on its upper part. The spring post (20) is fitted into the groove inside the cover (21) and the sealing cover plate (17). The sealing cover plate (17) is located on the upper part of the tube seat (18) and is fixed to the tube seat (18) by bolts. The upper part of the sealing cover plate (17) has a connecting post (16) and a measuring mechanism (15) on its upper part. The upper part of the measuring mechanism (15) has a connecting plate (12) and a micro switch (13) is provided on the side of the connecting plate (12). The side of the micro switch (13) has a connecting part (14) and the connecting part (14) is connected to the terminal block (11) by a wire.

2. The fast-acting hydraulic relay according to claim 1, characterized in that: The upper part of the upper seat (3) is provided with an end cover (10), and the end cover (10) is fixedly connected to the upper seat (3) by bolts.

3. The fast-acting hydraulic relay according to claim 1, characterized in that: The upper seat (3) is provided with a wire outlet nut (8) on its side and a wire protection sleeve (9) is provided on the surface of the wire outlet nut (8).

4. A fast-acting hydraulic relay according to claim 1, characterized in that: The base (4) is provided with a semi-circular mounting part (5) at the corner.

5. A fast-acting hydraulic relay according to claim 1, characterized in that: The lower seat (1) is provided with a drain plug (6) on its side and a sealing ring is provided at the connection between the drain plug (6) and the lower seat (1).

6. A fast-acting hydraulic relay according to claim 1, characterized in that: A test port (7) is provided on the other side of the lower seat, and a one-way valve (24) is provided inside the test port (7).

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