CN212158926U - Push device for check valve needle - Google Patents

Abstract

The utility model discloses a check valve needle is with supporting pusher, including gripping the return bend, grip at least one end in the both ends of return bend and be equipped with and support the subassembly of pushing away, support and push away the subassembly including precession pipe and push rod, the one end of precession pipe is located and is gripped on the return bend, be equipped with the precession screw thread that is used for being connected with the check valve on the inner wall of the other end, be equipped with the mount pad in the precession pipe, the center at the mount pad is fixed to the one end of push rod, the other end is equipped with the portion of pushing away that supports that is used for supporting to push away the interior needle of check valve, be equipped with the air vent on the. The supporting and pushing device for the check valve needle has the advantages of simple structure, convenience in operation, convenience in controlling the supporting and pushing amount of the valve needle and the like.

Description

Push device for check valve needle

Technical Field

The utility model relates to a cast exhaust appurtenance of barometer signal check-up especially relates to a check valve needle is with supporting pusher.

Background

SF6 equipment is widely used in power systems as a power equipment with good insulation performance. The SF6 equipment mainly comprises high-voltage power equipment such as a high-voltage circuit breaker, a GIS combined electrical appliance, an SF6 transformer and the like.

SF6 devices are typically designed with gas valves for inflation, deflation, and gas composition verification. The outlet of the air valve is usually provided with a manual air valve, an air pressure gauge and a check valve from inside to outside. The function of the manual air valve is to manually open and close the SF6 air valve channel. The barometer is used for monitoring the SF6 gas pressure of the equipment and uploading the pressure alarm value and the pressure locking value of 2 gas pressure threshold values to a background monitoring system through the micro switch and the secondary loop. The check valve is used for preventing gas from leaking.

During routine maintenance of the SF6 plant, the pressure alarm value and the pressure lock value need to be checked. Whether the pressure alarm value and the pressure locking value are monitored normally or not and whether the signals can be uploaded to a background normally or not are important for normal production operation of SF6 equipment.

The existing SF6 signal test method is as follows: firstly, closing the manual air valve, wherein the air pressure displayed by the air pressure meter represents the air pressure of a passage from the manual air valve to the check valve; secondly, the check valve waterproof cover is opened in a rotating mode; secondly, a knocking tool is used for lightly touching a valve needle of the check valve, SF6 gas in a channel is slowly discharged, and a pressure alarm value and a pressure locking value in a background monitoring system are recorded; if the pressure alarm value and the pressure locking value are in the qualified range, closing the manual air valve, recovering the original state of the site, and rotating to close the check valve waterproof cover; if the pressure alarm value and the pressure locking value are not in the qualified range, the fault reason needs to be found and repaired. However, the valve needle of the check valve is designed precisely, and the valve needle is easy to be knocked obliquely by tapping with a knocking tool, and an airtight rubber ring is inclined, so that the check valve is damaged, and the operating SF6 equipment can be damaged; meanwhile, the knocking method is difficult to control the movement of the valve needle, so that the exhaust rate is difficult to control, and the inspection accuracy is influenced. Therefore, it is urgently needed to develop a pushing device specially for a valve needle to replace the existing knocking tool so as to lift the safety detection means of the equipment and ensure the safe and reliable operation of the equipment.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a simple structure, convenient operation and be convenient for control needle to support the check valve needle of pushing away the volume with supporting to push away the device.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a check valve needle is with supporting pusher, is including gripping the return bend, grip in the both ends of return bend at least one end be equipped with support and push away the subassembly, support and push away the subassembly including advancing pipe and push rod soon, the one end of advancing the pipe soon is located and is gripped on the return bend, be equipped with the precession screw thread that is used for being connected with the check valve on the inner wall of the other end, be equipped with the mount pad in the precession pipe, the one end of push rod is fixed and is equipped with the portion of pushing away that supports that is used for supporting pushing away the interior needle of check valve at the center of mount pad, the other end, be equipped with the air vent on the mount pad.

As a further improvement of the above technical solution:

the holding bent pipe is in threaded connection with the screwing-in pipe.

The mounting seat is clamped between the holding bent pipe and the screwing pipe.

The end part of the holding bent pipe is provided with an insertion part, the outer diameter of the insertion part is smaller than that of the holding bent pipe, a butting surface is formed between the outer peripheral surface of the insertion part and the outer peripheral surface of the holding bent pipe, a sleeving part is arranged at one end of the screwing pipe connected with the holding bent pipe, the inner diameter of the sleeving part is larger than that of the screwing pipe, a clamping surface is formed between the inner peripheral surface of the sleeving part and the inner peripheral surface of the screwing pipe, the insertion part is inserted into the sleeving part and is in threaded connection with the sleeving part, the mounting seat is clamped between the end surface of the insertion part and the clamping surface, and the end surface of the sleeving part is butted with the butting surface.

The mounting seat is disc-shaped.

The air vent is provided with a plurality of air vents, and the air vents are distributed at intervals around the center of the mounting seat.

The push rod is a copper rod.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a check valve needle is with supporting pusher, including gripping the return bend, grip at least one end in the both ends of return bend and be equipped with and support the subassembly of pushing away, support and push away the subassembly including precession pipe and push rod, the one end of precession pipe is located and is gripped on the return bend, be equipped with on the inner wall of the other end and be used for the precession screw thread of being connected with the check valve, be equipped with the mount pad in the precession pipe, the center at the mount pad is fixed to the one end of push rod, the other end is equipped with and is used for supporting the portion of pushing away the interior needle of check valve, be equipped with the air vent. During the use, will advance the pipe with the check valve butt joint, hold and grip the return bend and slowly rotate and grip the return bend, drive the precession pipe rotatory, along with the precession pipe precession, the portion of pushing against of push rod supports the needle and inwards retracts to make gas pass through the check valve and along advancing the pipe and grip the return bend and discharge gradually. The pushing device is simple in structure and convenient to operate, the elbow is held by a hand to rotate, the rotation amount of the screwed pipe is convenient to control, and therefore the pushing amount of the valve needle is convenient to control. Compared with a knocking tool, the pushing device is easier to control the pushing amount of the valve needle, so that the exhaust rate of the check valve is more prepared, and the inspection accuracy is improved; meanwhile, the valve needle is gradually pushed by precession, so that the valve needle is not easy to be inclined, and the check valve is prevented from being damaged; and the holding bent pipe is bent, so that the gas can be discharged to one side of the precession pipe, the gas is prevented from being discharged to an operator, the operator is protected, and the operation safety is improved.

Drawings

Fig. 1 is a perspective view of the supporting and pushing device for the check valve needle of the present invention.

Fig. 2 is a cross-sectional view of the check valve needle pushing device of the present invention.

Fig. 3 is a side view of the pushing device for the check valve needle of the present invention.

The reference numerals in the figures denote:

1. holding the bent pipe; 2. screwing in the screw thread; 3. a pushing component; 31. screwing in the pipe; 32. a push rod; 321. a pushing part; 33. a mounting seat; 331. a vent hole; 4. a check valve; 41. a valve needle; 5. a plug-in part; 6. a pressing surface; 7. a socket joint part; 8. a clamping surface.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

Fig. 1 to fig. 3 show the utility model discloses check valve needle is with supporting thrust unit's an embodiment, this check valve needle is with supporting thrust unit is including holding return bend 1, the both ends of holding return bend 1 all are equipped with and support and push away subassembly 3, support and push away subassembly 3 including precession pipe 31 and push rod 32, the one end of precession pipe 31 is located and is held on return bend 1, be equipped with the precession screw thread 2 that is used for being connected with check valve 4 on the inner wall of the other end, be equipped with mount pad 33 in the precession pipe 31, the center at mount pad 33 is fixed to the one end of push rod 32, the other end is equipped with the portion 321 that supports and push away that is used for supporting and pushing away check valve 4 interior needle 41, be equipped with air vent 331 on the mount pad 33, the inside of holding return bend 1 communicates. When the gas exhaust valve is used, the precession pipe 31 is abutted to the check valve 4, the holding elbow 1 is held by a hand to slowly rotate the holding elbow 1, the precession pipe 31 is driven to rotate, and along with the precession of the precession pipe 31, the abutting part 321 of the push rod 32 abuts against the valve needle 41 to retract inwards, so that gas is gradually exhausted along the precession pipe 31 and the holding elbow 1 through the check valve 4. The pushing device is simple in structure and convenient to operate, the elbow pipe 1 is held by a hand to rotate, the rotation amount of the screwing pipe 31 is convenient to control, and therefore the pushing amount of the valve needle 41 is convenient to control. Compared with a knocking tool, the pushing device is easier to control the pushing amount of the valve needle 41, so that the exhaust rate of the check valve 4 is more ready, and the inspection accuracy is improved; meanwhile, the valve needle 41 is gradually pushed by precession, so that the valve needle 41 is not easy to be inclined, and the check valve 4 is prevented from being damaged; moreover, the holding elbow 1 is bent, so that the gas can be discharged to one side of the precession pipe 31, thereby avoiding the gas from being discharged to the operator, protecting the operator and improving the safety of operation.

In this embodiment, as shown in fig. 2, the grip elbow 1 is screwed to the screw-in pipe 31. The mounting seat 33 is clamped between the grip elbow 1 and the precession tube 31. Facilitating the removal and replacement of the push rod 32. Meanwhile, the pushing component 3 at one end of the holding elbow 1 can be detached and replaced by the extension bar, so that the extension bar can be held by a hand conveniently for rotating operation.

In this embodiment, as shown in fig. 2, the end of the holding bent tube 1 has an insertion portion 5, the outer diameter of the insertion portion 5 is smaller than the outer diameter of the holding bent tube 1, a abutting surface 6 is formed between the outer circumferential surface of the insertion portion 5 and the outer circumferential surface of the holding bent tube 1, a sleeve portion 7 is disposed at one end of the screwing tube 31 connected to the holding bent tube 1, the inner diameter of the sleeve portion 7 is larger than the inner diameter of the screwing tube 31, a clamping surface 8 is formed between the inner circumferential surface of the sleeve portion 7 and the inner circumferential surface of the screwing tube 31, the insertion portion 5 is inserted into the sleeve portion 7 and is in threaded connection with the sleeve portion 7, the mounting seat 33 is clamped between the end surface of the insertion portion 5 and the clamping surface 8, and the end surface of the. In practical operation, the connection between the holding elbow 1 and the screw-in pipe 31 can be spot-welded, so that the screw-in pipe 31 can be smoothly screwed out of the check valve 4 after the inspection is completed. When the push rod 32 needs to be replaced, the spot welding is melted, the holding bent pipe 1 is separated from the precession pipe 31, the mounting seat 33 and the push rod 32 are taken out, and a new mounting seat 33 and a new push rod 32 are replaced, so that the push rod 32 is convenient to replace.

In this embodiment, the mounting seat 33 has a disk shape. The push rod 32 has a cylindrical shape. The plurality of vent holes 331 are provided, and the vent holes 331 are evenly spaced around the center of the mount base 33.

In this embodiment, the push rod 32 is a copper rod. The copper rod has a better flexibility to avoid damaging the needle 41 when pushing against the needle 41.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims (7)

1. The utility model provides a check valve needle is with pushing away device which characterized in that: including holding return bend (1), at least one end is equipped with and supports and pushes away subassembly (3) in the both ends of holding return bend (1), support and push away subassembly (3) including advancing pipe (31) and push rod (32) soon, the one end of advancing pipe (31) is located and is held on return bend (1), be equipped with precession screw thread (2) that are used for being connected with check valve (4) on the inner wall of the other end, be equipped with mount pad (33) in advancing pipe (31), the one end of push rod (32) is fixed and is equipped with at the center of mount pad (33), the other end and is used for supporting the portion of pushing away (321) that pushes away needle (41) in check valve (4), be equipped with air vent (331) on mount pad (33), the inside of holding return bend (1) and the inside of advancing pipe (31) are through air vent (331) intercommunication.

2. The check valve needle pushing device as claimed in claim 1, wherein: the holding bent pipe (1) is in threaded connection with the precession pipe (31).

3. The check valve needle pushing device as claimed in claim 2, wherein: the mounting seat (33) is clamped between the holding elbow (1) and the precession tube (31).

4. The check valve needle pushing device as claimed in claim 3, wherein: the end part of the holding bent pipe (1) is provided with an inserting part (5), the outer diameter of the inserting part (5) is smaller than that of the holding bent pipe (1), a abutting surface (6) is formed between the outer peripheral surface of the inserting part (5) and the outer peripheral surface of the holding bent pipe (1), one end, connected with the holding bent pipe (1), of the screwing pipe (31) is provided with a sleeving part (7), the inner diameter of the sleeving part (7) is larger than that of the screwing pipe (31), a clamping surface (8) is formed between the inner peripheral surface of the sleeving part (7) and the inner peripheral surface of the screwing pipe (31), the inserting part (5) is inserted into the sleeving part (7) and is in threaded connection with the sleeving part (7), the mounting seat (33) is clamped between the end surface of the inserting part (5) and the clamping surface (8), and the end surface of the sleeving part (7) abuts against the abutting surface (6).

5. The thrust device for the check valve needle according to any one of claims 1 to 4, characterized in that: the mounting seat (33) is disc-shaped.

6. The check valve needle pushing device as claimed in claim 5, wherein: the plurality of vent holes (331) are arranged, and the vent holes (331) are distributed at intervals around the center of the mounting base (33).

7. The thrust device for the check valve needle according to any one of claims 1 to 4, characterized in that: the push rod (32) is a copper rod.

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