CN107932364A - A kind of GIS bayonet joints Special clamping instrument - Google Patents

Abstract

The invention discloses a special clamping tool for GIS plug-in joints, which includes a clamping assembly and a locking assembly connected with the clamping assembly. The locking assembly includes a fixed handle, a fixed pliers head fixed at one end of the fixed handle, and a The movable pliers head on the fixed handle and the movable handle connected with the movable pliers head, the clamping assembly includes a "U"-shaped first clamping plate and a second clamping plate respectively connected on the opposite side walls of the fixed pliers head and the movable pliers head. As for the clamping plate, the end of the first clamping plate is provided with two positioning protrusions facing the second clamping plate. The present invention prevents the test joint from contacting with the second clamping plate through the “U”-shaped first clamping plate and the second clamping plate. The GIS equipment connector moves, and the positioning protrusion is offset against the GIS equipment connector to prevent the special clamping tool from falling off, making the disconnection of the GIS device connector and the test connector faster and more stable, and improving the efficiency and safety of the disconnection work.

Description

A special clamping tool for GIS plug-in joints

technical field

The invention belongs to the field of clamping tools, and in particular relates to a special clamping tool for GIS plug-in joints.

Background technique

At present, GIS equipment is an important equipment in the primary system of the substation. With the increase of the number of GIS equipment, there are more and more GIS equipment air chamber inflation, vacuum pumping and live detection work. After a system equipment is put into operation, in order to ensure the continuous supply of substation load, power outage maintenance is generally not arranged, so the live detection work of GIS equipment has become normalized.

On the job site, there are the following problems about the live detection work of GIS equipment:

1. The disconnection frequency of GIS equipment joints and test joints is very high, and the workload is very heavy. The original GIS equipment joint clamping tool clamps and compresses the GIS equipment joints and test joints. There is a phenomenon of pressure imbalance, resulting in GIS The equipment joint and test joint are stuck during the clamping process and cause air leakage at the joint, and there is a possibility of deflection of the thimble due to pressure imbalance and air leakage.

2. Many GIS equipment joints are located at high places. When clamping GIS equipment joints at high places, it is necessary to use an original GIS equipment joint clamping tool at the top and bottom at the same time to forcefully open the joint thimble. Two people must work together at high places. The operation is difficult, the operation efficiency is low, and the high-altitude operation has high requirements for personnel and tools, there is a danger of losing balance, and there are certain safety hazards.

3. When the original GIS equipment joint clamping tool is used, there is a situation that the clamping tool slips and causes the test joint to break open and fall. When the clamping tool is used at a high place, the clamping tool slips and easily causes falling objects from a high place to hurt people.

Contents of the invention

The technical problem to be solved by the present invention is to provide a special clamping tool for GIS plug-in joints with high clamping efficiency.

In order to solve the above technical problems, the present invention adopts the following technical solutions: a special clamping tool for GIS plug-in joints, including a clamping assembly and a locking assembly connected to the clamping assembly, the locking assembly includes a fixed handle, fixed on a fixed The fixed pliers head at one end of the handle, the movable pliers head hinged on the fixed handle, and the movable handle connected with the movable pliers head. The first clamping plate and the second clamping plate are provided with two positioning protrusions facing the second clamping plate at the end of the first clamping plate.

Further, the width of the positioning protrusions is smaller than the width of the end of the first clamping plate, and a positioning groove is formed between the two positioning protrusions and the first clamping plate.

Further, a limiting member is provided on the fixed pliers, and the limiting member includes a fixed portion fixed on the fixed pliers and a limiting portion extending toward one side of the movable pliers, and the limiting portion is perpendicular to the fixed pliers.

Further, the second clamping plate includes a connecting portion connected to the movable pliers head and two clamping portions connected to the connecting portion, and middle parts of the two clamping portions protrude toward the first clamping plate.

Further, there is an elastic piece connected between the movable pliers head and the fixed handle, the movable pliers head is hinged to the movable handle, a support rod is connected between the movable handle and the fixed handle, the limit rod is hinged in the movable handle, and the end of the fixed handle is provided with There are adjustment screws that limit the movement of the support rod.

Further, a locking protrusion is provided on the side of the support rod facing the limit rod.

Further, the elastic member is a spring.

Compared with prior art, the beneficial effect of the present invention is:

1. The operation steps during detection are as follows:

(1) Check whether the parts of the special clamping tool are normal, especially the moving parts must not be damaged or separated; (2) Unscrew the three bolts at the joint end of the GIS equipment and remove the cap; (3) Lift up the special clamping tool Tool, so that the end of the test joint is located in the "U" bayonet of the second clamping plate; (4) align the special clamping tool and the test joint with the GIS equipment joint, so that the GIS equipment joint snaps into the first clamping plate At this time, the test connector is aligned with the GIS equipment connector; (5) Clamp the movable handle and the fixed handle to connect the gas path, and perform the gas chamber test and inspection; (6) After the gas chamber detection work is completed, the movable handle and the fixed handle are separated, and the special clamping tool and the test joint are removed; when the special clamping tool clamps the test joint and the GIS equipment joint, the "U"-shaped first clamping The plate and the second clamping plate prevent the test joint and the GIS equipment joint from moving in the horizontal direction, and the clamping force prevents the test joint and the GIS equipment joint from moving in the vertical direction, and the positioning protrusion is against the GIS equipment joint to prevent The special clamping tool falls off, making the clamping of the special clamping tool firm, making the disconnection work of the GIS equipment joint and the test joint faster and more stable, and improving the efficiency and safety of the disconnection work.

2. When the GIS equipment joint is snapped into the "U"-shaped bayonet of the first clamping plate, the end of the GIS equipment joint is stuck in the groove formed by the positioning protrusion and the first clamping plate, and the fit is tighter. The clamping is more stable, and at the same time, the positioning protrusion can prevent the special clamping tool from falling off, thereby improving the safety factor of the special tool.

3. The second clamping plate passes through the clamping part that protrudes toward the first clamping plate in the middle, so that the clamping part is a plate structure with a certain radian, so that the clamping force and clamping direction of the second clamping plate are more stable , to realize the bifurcated balanced pressure clamping of the test joint and the GIS equipment joint, and the bent convex part can ensure that when the test joint and the GIS equipment joint have a small size difference, there is no need to adjust the adjustment screw, so that the special clamping tool The clamping force is convenient and fast.

4. There is an elastic piece connected between the movable pliers head and the fixed handle. The movable pliers head is hinged with the movable handle. There is a support rod connected between the movable handle and the fixed handle. The support rod makes locking more labor-saving. The position bar makes it easier to release the locking of the support bar.

5. The side of the support rod facing the limit rod is provided with a locking protrusion, and the locking protrusion makes the locking effect of the support rod better when the movable handle and the fixed handle are locked.

Compared with the prior art, the present invention prevents the test joint and the GIS equipment joint from moving in the horizontal direction through the "U"-shaped first clamping plate and the second clamping plate, and at the same time, the limit piece and the clamping force prevent the test joint from moving in the horizontal direction. The joint and the GIS equipment joint move in the vertical direction, and the positioning protrusion is against the GIS equipment joint to prevent the special clamping tool from falling off, so that the clamping of the special clamping tool is firm, and the disassembly work of the GIS equipment joint and the test joint is easier. Fast and stable, improving the efficiency and safety of disconnection work.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

Fig. 1 is a schematic diagram of a special clamping tool for a GIS plug-in joint of the present invention;

Fig. 2 is a schematic diagram of the clamping state of a special clamping tool for a GIS plug-in joint according to the present invention;

FIG. 3 is a side view of FIG. 2 .

Among them: 1. Fixed handle; 11. Elastic part; 12. Support rod; 121. Locking protrusion; 13. Adjusting screw; 2. Fixed clamp head; 3. Active handle; 31. Limit rod; 4. Active clamp 5, the first clamping plate; 51, the positioning protrusion; 52, the limit piece; 521, the fixed part; 522, the limit part; 6, the second clamping plate; 61, the connecting part; 62, the clamping 7. GIS equipment connector; 8. Test connector.

Detailed ways

Referring to Fig. 1 to Fig. 3, an embodiment of a special clamping tool for GIS plug-in joints of the present invention will be further described.

A special clamping tool for GIS plug-in joints, including a clamping assembly and a locking assembly connected to the clamping assembly. The locking assembly includes a fixed handle 1, a fixed pliers head 2 fixed at one end of the fixed handle 1, and hinged on a fixed The movable clamp head 4 on the handle 1 and the movable handle 3 hinged with the movable clamp head 4 are connected with an elastic member 11 between the movable clamp head 4 and the fixed handle 1, and the elastic member 11 is a spring, and the movable handle 3 is hinged with a limiting rod 31, a support rod 12 is connected between the movable handle 3 and the fixed handle 1, and the support rod 12 is provided with a locking protrusion 121 on the side facing the limit rod 31, and the end of the fixed handle 1 is provided with an adjustment to limit the movement of the support rod 12. One end of the screw 13, the support rod 12 is hinged with the movable handle 3, and the other end is against the end of the adjusting screw 13. The clamping assembly includes "U"-shaped joints respectively connected to the opposite side walls of the fixed pliers 2 and the movable pliers 4. The first clamping plate 5 and the second clamping plate 6, the first clamping plate 5 is fixed on the fixed clamp head 2, the second quarter clamping plate is fixed on the movable clamp head 4, the first clamping plate 5 The end is provided with two positioning projections 51 towards the second clamping plate 6, the width of the positioning projections 51 is less than the width of the end of the first clamping plate 5, and the two positioning projections 51 are connected with the first clamping plate Positioning grooves are formed between the 5, the outer side wall of the positioning protrusion 51 is flush with the outer side wall of the first clamping plate 5, and a limiting member 52 is arranged on the fixed clamp head 2, and the limiting member 52 includes a The fixed portion 521 on the top and the limiting portion 522 extending toward the side of the movable pliers 4, the limiting portion 522 is perpendicular to the fixed pliers 2, the second clamping plate 6 includes a connecting portion 61 connected to the movable pliers 4 and two There are two clamping parts 62 connected to the connecting part 61 , and the middle parts of the two clamping parts 62 are bent and protruded towards the first clamping plate 5 .

The operation steps during detection are as follows:

(1) Check whether the parts of the special clamping tool are normal, especially the moving parts must not be damaged or detached;

(2) Unscrew the three bolts at the 7 end of the GIS equipment connector, and remove the cap;

(3) Lift the special clamping tool so that the end of the test joint 8 is located in the "U" bayonet of the second clamping plate 6, and the bottom of the test joint 8 is offset against the stopper 522 of the stopper 52;

(4) Align the special clamping tool and the test joint 8 with the GIS equipment joint 7, so that the GIS equipment joint 7 snaps into the "U"-shaped bayonet of the first clamping plate 5, and at the same time the bottom of the GIS equipment joint 7 is in contact with the limit The limit portion 522 of the position member 52 is offset, and at this time, the test joint 8 is aligned with the GIS equipment joint 7;

(5) Rotate the adjusting screw 13 to adjust the distance between the fixed clamp head 2 and the movable clamp head 4 when clamping the fixed handle 1 and the movable handle 3, so that the first clamping plate 5 and the second clamping plate 6 will just test Joint 8 and GIS equipment joint 7 are clamped, and then the movable handle 3 and the fixed handle 1 are clamped to make the gas path communicated, and the air chamber test and detection are carried out;

(6) After the air chamber detection work is completed, hold the movable handle 3 and the fixed handle 1, press the limit rod 31, the limit rod 31 pushes out the support rod 12, the movable handle 3 and the fixed handle 1 are separated, and take off the special clip Just hold the tool and test connector 8.

When carrying out the above steps (2), (3) and (4), it is also possible to first align the test joint 8 with the GIS equipment joint 7, and then clamp the test joint 8 and the GIS equipment joint 7 with the special clamping tool .

When the special clamping tool clamps the test joint 8 and the GIS equipment joint 7, the "U"-shaped first clamping plate 5 and the second clamping plate 6 prevent the test joint 8 and the GIS equipment joint 7 from moving in the horizontal direction At the same time, the limiter 52 and the clamping force prevent the test joint 8 and the GIS equipment joint 7 from moving in the vertical direction, and the positioning protrusion 51 is against the GIS equipment joint 7 to prevent the special clamping tool from falling off, so that the special clamping tool The clamping is firm, which makes the disconnection work of the GIS equipment connector 7 and the test connector 8 more rapid and stable, and improves the efficiency and safety of the disconnection work.

When the GIS equipment joint 7 is snapped into the "U"-shaped bayonet of the first clamping plate 5, the end of the GIS equipment joint 7 is stuck in the groove formed by the positioning protrusion 51 and the first clamping plate 5, and fits It is tighter and the clamping is more stable. At the same time, the positioning protrusion 51 can prevent the special clamping tool from falling off and improve the safety factor of the special tool.

The second clamping plate 6 passes through the clamping portion 62 protruding from the middle towards the first clamping plate 5, so that the clamping portion 62 is a plate structure with a certain curvature, so that the clamping force and clamping force of the second clamping plate 6 The direction is more stable, and the bifurcated balanced pressure clamping of the test joint 8 and the GIS equipment joint 7 is realized. The bent raised part can ensure that there is no need to adjust the adjustment screw when the test joint 8 and the GIS equipment joint 7 have a small size difference. 13. Make the clamping force of the special clamping tool convenient and fast.

An elastic member 11 is connected between the movable pliers head 4 and the fixed handle 1, the movable pliers head 4 is hinged to the movable handle 3, and a support rod 12 is connected between the movable handle 3 and the fixed handle 1, and the support rod 12 makes locking more labor-saving. At the same time, the hinged limit rod 31 in the movable handle 3 makes it easier to release the locking of the support rod 12 .

The support rod 12 is provided with a locking protrusion 121 facing the limit rod 31. The locking protrusion 121 enables the support rod 12 to have a better locking effect when the movable handle 3 and the fixed handle 1 are locked.

The above descriptions are only preferred implementations of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention should also be regarded as the protection scope of the present invention.

Claims (7)

1. A special clamping tool for GIS plug-in joints, characterized in that: it includes a clamping assembly and a locking assembly connected to the clamping assembly, and the locking assembly includes a fixed handle, a fixed clamp fixed at one end of the fixed handle Head, the movable pliers head hinged on the fixed handle and the movable handle connected with the movable pliers head. For the clamping plate and the second clamping plate, the end of the first clamping plate is provided with two positioning protrusions facing the second clamping plate. 2. A special clamping tool for GIS plug-in joints according to claim 1, characterized in that: the width of the positioning protrusion is smaller than the width of the end of the first clamping plate, and the two positioning protrusions and Positioning slots are formed between the first clamping plates. 3. A special clamping tool for GIS plug-in joints according to claim 1, characterized in that: the fixed clamp head is provided with a limiter, and the limiter includes a fixed part fixed on the fixed clamp head and The limiting portion extends toward one side of the movable pliers, and the limiting portion is perpendicular to the fixed pliers. 4. A special clamping tool for GIS plug-in joints according to claim 1, characterized in that: the second clamping plate includes a connecting part connected with the movable pliers head and two connecting parts. As for the clamping part, the middle parts of the two clamping parts protrude toward the first clamping plate. 5. A special clamping tool for GIS plug-in joints according to any one of claims 1 to 4, characterized in that: an elastic piece is connected between the movable pliers head and the fixed handle, and the movable pliers head It is hinged with the movable handle, a support rod is connected between the movable handle and the fixed handle, a limit rod is hinged inside the movable handle, and an adjusting screw that restricts the movement of the support rod is arranged at the end of the fixed handle. 6 . A special clamping tool for GIS plug-in joints according to claim 5 , wherein a locking protrusion is provided on the side of the support rod facing the limit rod. 7 . 7. A special clamping tool for GIS plug-in joints according to claim 5, wherein the elastic member is a spring.