CN214702605U

CN214702605U - Gauge seat tool for transformer installation pressure gauge

Info

Publication number: CN214702605U
Application number: CN202121451790.7U
Authority: CN
Inventors: 范立猛; 杨瑞彬; 何硕; 孙维斯; 贾建东
Original assignee: Baoding Tianwei Group Tebian Electric Co Ltd
Current assignee: Baoding Tianwei Group Tebian Electric Co Ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-11-12
Anticipated expiration: 2031-06-28

Abstract

The utility model provides a gauge stand tool for a transformer installation pressure gauge, which relates to the technical field of installation auxiliary tools and comprises a gauge stand, an air supply pipe and a sealing cover, wherein the gauge stand is installed on a butterfly valve; the air supply pipe is connected to the side part of the gauge stand, and a one-way valve is arranged in the air supply pipe; the sealing cover is arranged at the air inlet end of the air supply pipe. The utility model provides a transformer installation manometer is with gauge stand frock, the gauge stand is installed on the butterfly valve at oil tank top, install the manometer on the gauge stand, air supply pipe and nitrogen gas pipeline on the gauge stand link to each other, supply the gas to the cavity of gauge stand in, it is gaseous in the butterfly valve gets into the oil tank, the check valve has guaranteed the unicity of gas flow direction, avoid gaseous reverse effusion, utilize sealed cowling shutoff air supply pipe after the nitrogen filling is accomplished, keep the stability of the inside atmospheric pressure of oil tank, this structure keeps apart oil tank and gauge stand with the help of the butterfly valve, change through closed butterfly valve so that the manometer, air supply pipe on the gauge stand has made things convenient for the nitrogen filling operation, the operation degree of difficulty is reduced, the operating efficiency is improved.

Description

Gauge seat tool for transformer installation pressure gauge

Technical Field

The utility model belongs to the technical field of the installation auxiliary fixtures, more specifically say, relate to a transformer installation manometer is with table seat frock.

Background

At present, an oil immersed transformer needs to be pressed and leakage tested after assembly is completed, and at the moment, a pressure gauge needs to be installed to monitor the pressure inside an oil tank of the transformer in real time so as to judge whether a leakage point exists in the oil tank. In addition, because the transformer is heavy in weight, nitrogen is required to be filled for transportation during shipment, and a pressure gauge is also required to be installed to monitor the pressure inside the transformer oil tank in real time at the moment so as to judge whether external air enters the oil tank during transportation, so that the possibility that the transformer body is affected with damp is eliminated.

When the transformer factory fills nitrogen to the transformer, need use simultaneously and fill nitrogen frock, atmospheric pressure monitoring frock and nitrogen gas pipeline, need three people cooperation operation simultaneously at the nitrogen filling in-process, alone be responsible for operating the nitrogen gas pipeline, alone be responsible for operating and fill nitrogen frock, alone be responsible for observing the atmospheric pressure change of manometer, need occupy a large amount of manpower resources, operation process is very loaded down with trivial details.

Because the manometer life-span is shorter and itself does not set up the valve, so under the circumstances that the manometer damaged, in order not to make transformer oil spill over, need the partial transformer oil in the earlier discharge oil tank, just can carry out the change of manometer, above-mentioned operation process is loaded down with trivial details complicated. Therefore, the structure has high operation difficulty in inflation and replacement of the pressure gauge, and a large amount of time is wasted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a transformer installation manometer is with table holder frock, can be convenient carry on the oil tank aerify, and be convenient for carry on the manometer and observe and change, operating personnel can observe the change of manometer when filling nitrogen, reduce other auxiliary personnel's occupation, when the manometer damages, also can close conveniently and change behind the butterfly valve.

In order to achieve the above object, the utility model adopts the following technical scheme: the gauge seat tool for installing the pressure gauge on the transformer is used for being installed on an oil tank of the transformer, a butterfly valve is arranged at the top of the oil tank and comprises a gauge seat, an air supply pipe and a sealing cover, the gauge seat is installed on the butterfly valve, the top surface of the gauge seat is used for installing the pressure gauge, and a cavity with a downward opening and communicated with the oil tank is arranged inside the gauge seat; the gas supply pipe is connected to the side part of the gauge stand, and a one-way valve for supplying gas into the oil tank in a one-way mode is arranged in the gas supply pipe; the sealing cover is arranged at the air inlet end of the air supply pipe and used for sealing the air supply pipe after the air inflation is finished.

In one possible implementation mode, the gauge stand comprises a flange and a lifting seat, the flange is used for being attached to the top surface of the butterfly valve, and the middle of the flange is provided with a through hole which is communicated up and down; the lifting seat is connected above the flange, the lifting seat is provided with an inner cavity with a downward opening and communicated with the through hole, the inner cavity and the through hole form a cavity, and the air supply pipe is connected to the side wall of the lifting seat.

In some embodiments, the lifting seat is a cylindrical member, and a first threaded hole for threaded connection with the lower mounting end of the pressure gauge is formed in a top surface of the lifting seat.

In one possible implementation, the air supply pipe extends into the gauge stand, and the extending end is disposed near the axis of the gauge stand.

In some embodiments, the air supply pipe has a decreasing outer diameter from an end near the gauge stand to an end far from the gauge stand.

In a possible implementation manner, a connecting pipe which extends outwards and is used for being sleeved on the periphery of the air supply pipe is further arranged on the side wall of the gauge stand, a first internal thread is arranged on the inner wall of the connecting pipe, and a first external thread matched with the first internal thread is arranged on the outer wall of the air supply pipe.

In some embodiments, the air supply pipe is wound with a raw adhesive tape around the outer periphery of the first external thread to seal the air supply pipe and the connection pipe.

In a possible implementation mode, the outer peripheral wall of the gas supply pipe is further provided with a second external thread, and the inner peripheral wall of the seal cover is provided with a second internal thread matched with the second external thread;

the first external thread and the second external thread are arranged at intervals in the axial direction of the gas supply pipe.

In some embodiments, the outer circumference of the gas supply pipe is sleeved with a sealing ring, the sealing ring is located between the first external thread and the second external thread, and the sealing cover can tightly push the sealing ring to enable the sealing ring to abut against the outer end face of the connecting pipe.

In some embodiments, the end surface of the sealing ring close to the connecting pipe is connected with the outer end surface of the connecting pipe in an adhesive way.

The scheme shown in the embodiment of the application, compared with the prior art, the scheme shown in the embodiment of the application, the gauge stand is installed on the butterfly valve at the top of the oil tank, install the manometer on the gauge stand, air supply pipe and nitrogen pipeline on the gauge stand link to each other, supply the gas in the cavity to the gauge stand, gas gets into in the oil tank through the butterfly valve, the check valve has guaranteed the unicity of gas flow direction, avoid gaseous reverse effusion, utilize sealed cowling shutoff air supply pipe after filling nitrogen and accomplishing, keep the stability of the inside atmospheric pressure of oil tank, this structure keeps apart oil tank and gauge stand with the help of the butterfly valve, through the change of closed butterfly valve so that the manometer, air supply pipe on the gauge stand has made things convenient for the operation of filling nitrogen, the operation degree of difficulty is reduced, and the operation efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic cross-sectional structural view of a gauge stand tool for a transformer installation pressure gauge in a use state according to an embodiment of the present invention;

fig. 2 is a schematic view of an embodiment of the present invention, illustrating a gas supply pipe in fig. 1;

fig. 3 is a schematic partial sectional structural view of the gauge stand, the air supply pipe and the sealing cover in fig. 1 according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

1. a gauge stand; 11. a flange; 12. lifting the seat; 111. a through hole; 121. an inner cavity; 123. a first threaded hole; 13. a connecting pipe; 131. a first internal thread; 14. a cavity; 2. a gas supply pipe; 21. a first external thread; 22. a second external thread; 23. a one-way valve; 3. a sealing cover; 31. a second internal thread; 4. a seal ring; 61. an oil tank; 62. a butterfly valve; 63. and a pressure gauge.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

A butterfly valve 62 for vacuum pumping is provided on the top of the oil tank 61, and the sealing performance of the oil tank 61 can be effectively monitored by attaching the gauge stand 1 to the butterfly valve 62 on the top of the oil tank 61. The bottom surface of the butterfly valve 62 is provided with a sealing washer, so that the sealing performance between the butterfly valve 62 and the oil tank 61 can be ensured, and the top surface of the butterfly valve 62 is also provided with a sealing washer, so that the effective sealing between the gauge stand 1 and the butterfly valve 62 is ensured. In addition, a boss is provided on one of the two end faces of the butterfly valve 62, and in this embodiment, the end face of the butterfly valve 62 on which the boss is provided faces upward, so that the butterfly valve can be reliably connected to the meter base 1 by a connecting member (i.e., a screw) having a large length on the end face.

Referring to fig. 1 to fig. 3, a gauge stand fixture for a transformer mounting pressure gauge according to the present invention will now be described. The instrument seat tool for installing the pressure gauge on the transformer is used for being installed on an oil tank 61 of the transformer, a butterfly valve 62 is arranged at the top of the oil tank 61 and comprises an instrument seat 1, an air supply pipe 2 and a sealing cover 3, the instrument seat 1 is installed on the butterfly valve 62, the top surface of the instrument seat is used for installing a pressure gauge 63, and a cavity 14 with a downward opening and communicated with the oil tank 61 is arranged inside the instrument seat 1; the gas supply pipe 2 is connected to the side part of the gauge stand 1, and a one-way valve 23 for supplying gas into the oil tank 61 in one way is arranged in the gas supply pipe 2; the sealing cover 3 is covered on the air inlet end of the air supply pipe 2 and used for sealing the air supply pipe 2 after the inflation is finished.

The transformer installation manometer that this embodiment provided uses seat frock, compared with the prior art, the transformer installation manometer that this embodiment provided uses seat frock, gauge stand 1 is installed on the butterfly valve 62 at oil tank 61 top, install manometer 63 on gauge stand 1, air supply pipe 2 and nitrogen pipeline on the gauge stand 1 link to each other, supply gas in the cavity 14 to gauge stand 1, gas gets into in the oil tank 61 through butterfly valve 62, check valve 23 has guaranteed the unicity of gas flow direction, avoid gaseous reverse effusion, utilize sealed cowling 3 shutoff air supply pipe 2 after the nitrogen charging is accomplished, keep the stability of the inside atmospheric pressure of oil tank 61, this structure is kept apart oil tank 61 and gauge stand 1 with the help of butterfly valve 62, through closing butterfly valve 62 so that manometer 63's change, air supply pipe 2 on the gauge stand 1 has made things convenient for the nitrogen charging operation, the operation degree of difficulty is reduced, and operation efficiency is improved.

In some possible implementations, the above-mentioned characteristic watch seat 1 adopts the structure shown in fig. 3. Referring to fig. 3, the gauge stand 1 includes a flange 11 and a lifting seat 12, the flange 11 is used for being attached to the top surface of the butterfly valve 62, and a through hole 111 which is through up and down is formed in the middle of the flange 11; the lifting seat 12 is connected above the flange 11, the lifting seat 12 is provided with an inner cavity 121 with a downward opening and communicated with the through hole 111, the inner cavity 121 and the through hole 111 form a cavity 14, and the gas supply pipe 2 is connected on the side wall of the lifting seat 12.

The flange 11 is used for being connected with the butterfly valve 62, and the bottom surface of the butterfly valve 62 is connected on the box, is equipped with seal ring on the bottom surface of the butterfly valve 62, is convenient for guarantee the leakproofness of being connected between butterfly valve 62 and the oil tank 61. The flange 11 laminating also is equipped with seal ring on the top surface of butterfly valve 62, and seal ring can effectively laminate and the butt with the bottom surface of flange 11, guarantees effectively sealed between flange 11 and the butterfly valve 62, avoids gas leakage's problem.

Through-hole 111 in the middle part of flange 11 and the inner chamber 121 of lifting seat 12 communicate each other to form whole cavity 14, the air current that air supply pipe 2 got into can be smooth get into oil tank 61 through butterfly valve 62 in, lifting seat 12 has the height of upwards lifting, and gauge stand 1 is installed on the top surface of lifting seat 12, and the operating personnel of being convenient for observes the reading.

In some embodiments, the feature lift block 12 may be configured as shown in FIG. 1. Referring to fig. 1, the lifting seat 12 is a cylindrical member, and a first threaded hole 123 for being threadedly coupled to a lower mounting end of the pressure gauge 63 is formed in a top surface of the lifting seat 12.

The lift block 12 is a cylindrical member that can be machined directly from a tubular member. Correspondingly, the cavity 14 is also cylindrical, so that the air flow in the air supply pipe 2 can be smoothly supplied to the oil tank 61 below. Adopt threaded connection's form between manometer 63 and the lifting seat 12, first screw hole 123 on the lifting seat 12 can cooperate with the external screw thread of the installation end of manometer 63, guarantees to be reliably connected between manometer 63 and the lifting seat 12.

When the air supply pipe 2 is mounted on the gauge stand 1, the air supply pipe 2 extends into the gauge stand 1, and the extending end is disposed near the axis of the gauge stand 1.

The gas supply pipe 2 extends towards the inside of the gauge stand 1, and effectively guides and conveys gas supplied into the gauge stand 1, so that the gas can be uniformly diffused in the cavity 14 and smoothly enters the oil tank 61, the gas-filled resistance is reduced, and the gas-filled efficiency is improved.

In some embodiments, the gas supply tube 2 may be configured as shown in FIG. 2. Referring to fig. 2, the outer diameter of the air supply pipe 2 gradually becomes smaller from the end close to the gauge stand 1 to the end far from the gauge stand 1.

The external diameter of the outer end of the air supply pipe 2 is gradually reduced, and when the air supply pipe is connected with a nitrogen pipeline, the air supply pipe 2 can be smoothly inserted into the nitrogen pipeline, so that the operation convenience is improved. In addition, when the gas supply pipe 2 is subsequently sealed by the sealing cover 3, the installation of the sealing cover 3 is facilitated, and the convenience of connection is improved.

In some possible implementations, the above-mentioned characteristic watch seat 1 adopts the structure shown in fig. 3. Referring to fig. 3, a connecting pipe 13 extending outward and used to be sleeved on the periphery of the air supply pipe 2 is further disposed on the side wall of the gauge stand 1, a first internal thread 131 is disposed on the inner wall of the connecting pipe 13, and a first external thread 21 matched with the first internal thread 131 is disposed on the outer wall of the air supply pipe 2.

In order to conveniently connect the air supply pipe 2 and the gauge stand 1, the outer side wall of the gauge stand 1 is provided with the connecting pipe 13 extending outwards, and the first internal thread 131 of the connecting pipe 13 is in threaded fit with the first external thread 21 of the air supply pipe 2, so that the reliable connection between the two is realized, and the disassembly and the assembly are very convenient. The connecting pipe 13 has a certain length in the axial direction, so that the connecting area of the connecting pipe and the air supply pipe 2 is increased conveniently, the connecting reliability is improved, and the smooth operation of the air inflation process is ensured.

On the basis of the threaded connection between the air supply pipe 2 and the connecting pipe 13, a raw adhesive tape is wound on the air supply pipe 2 and is positioned on the periphery of the first external thread 21 to seal the air supply pipe 2 and the connecting pipe 13. The leakproofness that the two are connected can further be strengthened to the raw sticky tape, avoids threaded connection to have the gas leakage problem that the gap caused, and the raw sticky tape winding is equipped with the position of first external screw thread 21 at air supply pipe 2, effectively fills the gap between air supply pipe 2 and the connecting pipe 13, avoids gaseous seepage, and then guarantees the stability of the inside pressure of oil tank 61.

The gas supply pipe 2 is in threaded connection with the sealing cover 3, second external threads 22 are further arranged on the outer circumferential wall of the gas supply pipe 2, and second internal threads 31 matched with the second external threads 22 are arranged on the inner circumferential wall of the sealing cover 3; wherein the first external thread 21 and the second external thread 22 are arranged at a distance in the axial direction of the gas supply pipe 2.

First external screw thread 21 is used for linking to each other with connecting pipe 13, and second external screw thread 22 is used for linking to each other with sealed cowling 3, and the outer peripheral face of air supply pipe 2 levels between first external screw thread 21 and second external screw thread 22, for sealing washer 4 provides places the space, avoids sealing washer 4 cover to influence its sealing performance in the screw thread periphery, is convenient for improve sealed effect.

Referring to fig. 2, in some embodiments, in order to ensure the sealing function of the sealing cover 3, the outer circumference of the gas supply pipe 2 is sleeved with a sealing ring 4, the sealing ring 4 is located between the first external thread 21 and the second external thread 22, and the sealing cover 3 can push the sealing ring 4 tightly so that the sealing ring 4 abuts on the outer end face of the connecting pipe 13.

When the sealing cover 3 is in threaded connection with the outer end of the air supply pipe 2, the end face of one side of the sealing cover 3 close to the gauge stand 1 pushes the sealing ring 4, so that the sealing ring 4 is tightly pushed on the outer end face of the connecting pipe 13, the sealing ring 4 can effectively fill a gap between the sealing cover 3 and the connecting pipe 13, gas is prevented from escaping from the gap, and the stability of the internal air pressure of the oil tank 61 is guaranteed.

In some embodiments, the sealing ring 4 may be configured as shown in fig. 2. Referring to fig. 2, the end surface of the seal ring 4 close to the connecting pipe 13 is adhesively connected to the outer end surface of the connecting pipe 13.

Sealing washer 4 glues in advance on the outer terminal surface of connecting pipe 13, when the sealed cowling 3 is rotatory screwed up, sealing washer 4 with can guarantee with the connecting pipe 13 between the stability of relative position, avoid sealing washer 4 receive sealed cowling 3 effect synchronous revolution to cause with first external screw thread 21 or second external screw thread 22 between take place the friction, and then avoid causing the damage of sealing washer 4. Under the extrusion action of the sealing cover 3, the sealing ring 4 can be reliably adhered to the outer end face of the connecting pipe 13 until being pressed in a gap between the sealing cover 3 and the connecting pipe 13 by the extrusion action of the sealing cover 3, so that good sealing performance is realized.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Transformer installation manometer is with table seat frock for install on the oil tank of transformer, the top of oil tank is equipped with the butterfly valve, its characterized in that includes:

the gauge seat is arranged on the butterfly valve, the top surface of the gauge seat is used for installing a pressure gauge, and a cavity with a downward opening and communicated with the oil tank is arranged in the gauge seat;

the gas supply pipe is connected to the side part of the gauge stand, and a one-way valve used for supplying gas into the oil tank in a one-way mode is arranged in the gas supply pipe;

and the sealing cover is covered at the air inlet end of the air supply pipe and used for plugging the air supply pipe after the air inflation is finished.

2. The gauge stand tool for a transformer installation pressure gauge according to claim 1, wherein the gauge stand comprises:

the flange is used for being attached to the top surface of the butterfly valve and connected with the butterfly valve through a connecting piece, and a through hole which is communicated up and down is formed in the middle of the flange;

the lifting seat is connected above the flange, the lifting seat is provided with an inner cavity with a downward opening and through holes, the inner cavity is formed with the through holes, and the air supply pipe is connected to the side wall of the lifting seat.

3. The gauge holder tool for the transformer installation pressure gauge according to claim 2, wherein the lifting seat is a cylindrical member, and a first threaded hole for threaded connection with the lower installation end of the pressure gauge is formed in the top surface of the lifting seat.

4. The gauge stand tool for a transformer installation gauge according to claim 1, wherein the gas supply pipe extends into the gauge stand, and the extending end is disposed near the axial center of the gauge stand.

5. The gauge holder tool for a transformer installation gauge according to claim 4, wherein the outer diameter of the gas supply pipe is gradually reduced from an end close to the gauge holder to an end far from the gauge holder.

6. The gauge stand tool for the transformer installation pressure gauge according to claim 1, wherein a connecting pipe extending outward and adapted to be sleeved on the outer periphery of the air supply pipe is further provided on the sidewall of the gauge stand, a first internal thread is provided on an inner wall of the connecting pipe, and a first external thread engaged with the first internal thread is provided on an outer wall of the air supply pipe.

7. The gauge stand tool for a transformer installation pressure gauge according to claim 6, wherein a raw tape positioned on the outer periphery of the first external thread to seal the air supply pipe and the connection pipe is wound on the air supply pipe.

8. The gauge holder tool for the transformer installation pressure gauge according to claim 6, wherein a second external thread is further provided on the outer circumferential wall of the gas supply pipe, and a second internal thread matched with the second external thread is provided on the inner circumferential wall of the sealing cover;

wherein the first external thread and the second external thread are arranged at intervals in the axial direction of the gas supply pipe.

9. The gauge holder tool for the transformer installation pressure gauge according to claim 8, wherein a sealing ring is sleeved on the outer periphery of the gas supply pipe and located between the first external thread and the second external thread, and the sealing cover can tightly support the sealing ring so that the sealing ring abuts against the outer end face of the connecting pipe.

10. The gauge holder tool for the transformer installation pressure gauge according to claim 9, wherein the end surface of the seal ring close to the connection pipe is connected with the outer end surface of the connection pipe in an adhesive manner.