CN-116164184-B - Portable anti-theft plug

CN116164184BCN 116164184 BCN116164184 BCN 116164184BCN-116164184-B

Abstract

The invention discloses a portable anti-theft plug, which relates to the technical field of oilfield exploitation and comprises a hollow cylinder, wherein the cylinder is used for being installed in a valve channel, a plurality of tooth blocks uniformly penetrate through the side wall of the cylinder, one end of the cylinder, which is far away from the valve channel, is connected with an internal expansion pin shaft in a threaded manner, the front end of the internal expansion pin shaft is provided with a connector, the side wall of the connector can be abutted to the bottom of the tooth block, the connector can push the tooth block to move outwards along the radial direction of the cylinder, the rear end of the internal expansion pin shaft is provided with a stepped hole, the stepped hole comprises an internal hexagonal anti-theft hole and a threaded hole, the internal hexagonal anti-theft hole can be clamped with an anti-theft wrench, and the outer wall of the cylinder is sleeved with a sealing ring. The invention can be quickly installed when the temporary sudden stop condition is stopped, and crude oil cannot flow out even if the valve is opened, thereby playing a role in theft prevention.

Inventors

DUAN XINTONG
DUAN FUHAI
DONG ZHANGNING
BAI YUNLONG
YANG DANDAN
JIA GUANGCAI
JIA SHOUTIAN
JIA SHOUYI
ZHENG LIHUA

Assignees

牡丹江天庆石油机械设备有限公司

Dates

Publication Date: 20260505
Application Date: 20230110

Claims (7)

1. The portable anti-theft plug is characterized by comprising a hollow cylinder, wherein the cylinder is used for being installed in a valve channel, a plurality of tooth blocks uniformly penetrate through the side wall of the cylinder, one end of the cylinder, far away from the valve channel, is in threaded connection with an internal expansion pin shaft, the front end of the internal expansion pin shaft is provided with a connector, the side wall of the connector can be abutted with the bottom of the tooth block, and the connector can push the tooth block to move outwards along the radial direction of the cylinder; The automatic feeding device is characterized by further comprising a feeding sleeve, wherein a fixing rod is fixedly arranged on the side wall of the feeding sleeve, two flanges which are projected to be T-shaped are symmetrically arranged at one end of the feeding sleeve, a virtual circle where the radial section of each flange is located and the radial section of the feeding sleeve are arranged concentrically in equal diameter, two symmetrically arranged arc grooves are formed in the outer wall of one end, far away from a valve channel, of each cylinder, a connecting gap is formed in one end, far away from the valve channel, of each arc groove, and each flange can pass through the corresponding connecting gap and then rotate in each arc groove.
2. The portable anti-theft plug of claim 1, wherein the anti-theft wrench comprises a first wrench rod and a second wrench rod which are vertically and fixedly connected, the first wrench rod is of a cylindrical structure, the section of the second wrench rod is of a hexagonal structure, two positioning columns are fixedly connected to the end part of the second wrench rod, and the second wrench rod can be clamped in the inner hexagonal anti-theft hole.
3. The portable anti-theft plug according to claim 2, wherein an anti-theft plug is fixedly connected to the threaded hole through threads, two positioning holes are formed in one end, away from the internal expansion pin shaft, of the anti-theft plug, and two positioning columns can be correspondingly inserted into the two positioning holes.
4. The portable anti-theft plug according to claim 1, wherein the front end of the connector is of a truncated cone-shaped structure with gradually reduced diameter, the bottom of the tooth block is of an inclined surface structure, and the inclined direction of the bottom of the tooth block is the same as the inclined direction of the side wall of the front end of the connector.
5. The portable anti-theft plug according to claim 1, wherein return tables are arranged on two sides of the top of the tooth block, and return rubber rings are sleeved on the outer sides of the return tables.
6. The portable anti-theft plug according to claim 5, wherein a return rubber ring groove is formed in the side wall of the cylinder, the return rubber ring is sleeved in the return rubber ring groove, and a return table of the tooth block is abutted against the inner side of the return rubber ring.
7. The portable anti-theft plug according to claim 1, wherein an annular sealing ring groove is formed between the tooth block and the arc-shaped groove, and the sealing ring is sleeved in the sealing ring groove.

Description

Portable anti-theft plug Technical Field The invention relates to the technical field related to oilfield exploitation, in particular to a portable anti-theft plug. Background In long-term production of oil fields, when some high-yield oil wells are shut down due to fault shutdown or pump condition problem shutdown, oil discharge and oil theft of a casing on the oil pumping well often occur. Because the inside of the sleeve is mostly pure oil without water, and the sinking degree of each hundred meters is about 0.86 ton. The crude oil can be put on the ground only by opening the wellhead sleeve emptying valve, so that the crude oil loss of an oil field is caused, large-area greasy dirt is formed, an environmental pollution accident occurs, difficulty is brought to production management, and labor intensity of staff in a post is increased. Disclosure of Invention The invention aims to provide a portable anti-theft plug, which solves the problems in the prior art, can be quickly installed when a temporary emergency stops, cannot flow out even if a valve is opened, and plays a role in theft prevention. In order to achieve the above object, the present invention provides the following solutions: The invention provides a portable anti-theft plug which comprises a hollow cylinder body, wherein the cylinder body is arranged in a valve channel, a plurality of tooth blocks uniformly penetrate through the side wall of the cylinder body, one end of the cylinder body, which is far away from the valve channel, is connected with an internal expansion pin shaft in a threaded manner, the front end of the internal expansion pin shaft is provided with a connector, the side wall of the connector can be abutted against the bottom of the tooth block, the connector can push the tooth block to move outwards along the radial direction of the cylinder body, the rear end of the internal expansion pin shaft is provided with a stepped hole, the stepped hole comprises an internal hexagonal anti-theft hole and a threaded hole, the internal hexagonal anti-theft hole can be clamped with an anti-theft wrench, and the outer wall of the cylinder body is sleeved with a sealing ring. Optionally, the automatic feeding device further comprises a feeding sleeve, wherein a fixing rod is fixedly arranged on the side wall of the feeding sleeve, two flanges which are projected to be T-shaped are symmetrically arranged at one end of the feeding sleeve, a virtual circle where the radial section of each flange is located and the radial section of the feeding sleeve are arranged concentrically in equal diameter, two symmetrically arranged arc grooves are formed in the outer wall of one end, far away from the valve channel, of each cylinder, a connecting gap is formed in one end, far away from the valve channel, of each arc groove, and each flange can pass through the corresponding connecting gap and then rotate in each arc groove. Optionally, the anti-theft wrench comprises a first wrench rod and a second wrench rod which are vertically and fixedly connected, wherein the first wrench rod is of a cylindrical structure, the section of the second wrench rod is of a hexagonal structure, two positioning columns are fixedly connected to the end part of the second wrench rod, and the second wrench rod can be clamped in the inner hexagonal anti-theft hole. Optionally, threaded hole internal thread fixedly connected with theftproof plug, two locating holes have been seted up to the theftproof plug one end of keeping away from interior expanding pin axle, two the reference column can correspond and insert and locate two in the locating hole. Optionally, the connector front end is the round platform column structure that the diameter reduces gradually, tooth piece bottom is the inclined plane structure, the incline direction of tooth piece bottom with the incline direction of connector front end lateral wall is the same. Optionally, return tables are arranged on two sides of the top of the tooth block, and return rubber rings are sleeved on the outer sides of the return tables. Optionally, a return rubber ring groove is formed in the side wall of the cylinder, the return rubber ring is sleeved in the return rubber ring groove, and the return table of the tooth block is in butt joint with the inner side of the return rubber ring. Optionally, an annular sealing ring groove is formed between the tooth block and the arc groove, and the sealing ring is sleeved in the sealing ring groove. Compared with the prior art, the invention has the following technical effects: the invention well solves the problems of long shut-in well, various pump condition wells and temporary shut-down well casing oil drainage and theft prevention in remote wells, achieves the purposes of quick installation, safety and environmental protection, creates huge economic and social benefits, adopts an anti-theft wrench structure by installing the device in a valve passage port, avoids the problem th