CN210510385U

CN210510385U - Anti-theft oil valve

Info

Publication number: CN210510385U
Application number: CN201921005826.1U
Authority: CN
Inventors: 雷佳; 杨莲; 付江徽
Original assignee: China Petroleum and Chemical Corp; Sinopec Jiangsu Oilfield Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Jiangsu Oilfield Co
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2020-05-12
Anticipated expiration: 2029-07-01

Abstract

The utility model relates to an anti-theft oil valve, the periphery of a valve rod is provided with a sheath, the middle section of the sheath is welded with a lock shell, the inner cavity of the lock shell is nested with a lock core, and the center of the lock core is fixedly connected with the valve rod; a plurality of L-shaped lock cylinder cavities are arranged in the lock cylinder, press blocks are arranged in the outer ports of the lock cylinder cavities, ejector blocks are arranged in the inner ports of the lock cylinder cavities, and the lock cylinder cavities are connected through connecting rods; the lock shell is internally provided with a plurality of lock block cavities extending along the radial direction of the lock shell, and each lock block cavity corresponds to the inner port of the lock cylinder cavity and is smoothly communicated with the inner port of the lock cylinder cavity; a locking block is arranged in one of the locking block cavities, the front surface of the locking block is abutted against the corresponding ejector block, and the back surface of the locking block is supported at the bottom of the locking block cavity through a locking block spring; and a pressing block spring is respectively arranged between the inner end surface of each pressing block and the bottom wall of the lock cylinder. The valve is provided with a true lock cavity, the rest are false lock cavities, only the pressing block of the true lock cavity is pressed to the accurate depth by adopting a special handle, and meanwhile, the false lock cavity can not be pressed, so that unlocking can be realized, and the anti-theft performance is excellent.

Description

Anti-theft oil valve

Technical Field

The utility model relates to an oil valve is used in the oil recovery plant, especially relates to an anti-theft oil valve, belongs to oil recovery plant valve technical field.

Background

At present, the sampling valve of the wellhead of the oil well is arranged on a vertical pipeline of the wellhead, anyone can open the sampling valve on site by using a hand wheel or a wrench, and a thief can easily steal crude oil by opening the sampling valve, so that enterprises suffer unnecessary economic loss and the environmental pollution on site is easily caused.

The utility model discloses a chinese utility model patent application for publication number CN 104179500a discloses a built-in sampling device, including the sampling tube, the clamp head is connected respectively at the both ends of sampling tube, and the sampling tube internal fixation has three way plug valve, and three way plug valve includes valve body, spherical case and valve rod, be provided with horizontal import on the valve body, export and the perpendicular export of horizontal import on same straight line with horizontal import, three way plug valve's level advances, exports and the sampling tube coaxial line, and three way plug valve's perpendicular delivery outlet is connected with the sample nipple joint, and the sample nipple joint outwards stretches out the sampling tube. The three-way plug valve is built-in, has a good heat preservation effect, the sampling short section is vertically arranged, and after sampling is completed, no residue is left in the sampling short section, so that the occurrence of freezing and blocking is avoided.

Because the oil production plant is mostly located in remote areas, although the valve rod of the sampling valve is arranged in the sheath, the thief can easily transfer the valve rod to steal crude oil by using a simple tool, so that the national assets are subject to loss, and the oil stealing prevention performance of the sampling valve is improved, which is a big subject of the oil production plant.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that exists among the prior art, provide a theftproof fuel tap, only adopt supporting instrument could rotate the valve rod, and the valve opens and close convenient and fast.

In order to solve the technical problem, the anti-theft oil valve of the utility model comprises a valve rod extending out of a valve body, wherein the outer end of the valve rod is provided with a valve rod square tenon, the periphery of the valve rod is provided with a sheath, the inner end of the sheath is welded on the valve body, the middle section of the sheath is welded with a lock shell, the valve rod penetrates out of the center of the bottom wall of the lock shell, the inner cavity of the lock shell is nested with a lock cylinder, and the center of the lock cylinder is welded on the valve rod; the lock core is provided with four lock core cavities with openings at two ends and L-shaped sections, a pressing block is arranged in an outer port of each lock core cavity, an ejecting block is arranged in an inner port of each lock core cavity, the back of each pressing block is hinged with a connecting rod, and the other end of each connecting rod is hinged with the back of each ejecting block; the lock shell is internally provided with a plurality of lock block cavities extending along the radial direction of the lock shell, and each lock block cavity corresponds to the inner port of the lock cylinder cavity and is smoothly communicated with the inner port of the lock cylinder cavity; a locking block is arranged in one of the locking block cavities, the front surface of the locking block is abutted against the corresponding ejector block, and the back surface of the locking block is supported at the bottom of the locking block cavity through a locking block spring; and a pressing block spring is arranged between the inner end surface of each pressing block and the bottom wall of the lock cylinder.

Compared with the prior art, the utility model discloses following beneficial effect has been obtained: because the valve rod square tenon is positioned in the inner cavity of the sheath, an operator can insert into the inner cavity of the sheath by means of a special tool and rotate the valve rod through the valve rod square tenon. The square tenon of the valve rod is internally provided with a first oil theft prevention measure, the locking mechanism is used as a second oil theft prevention measure, and the lock cylinder with the T-shaped section automatically obtains axial positioning in the lock shell. The lock block cavity provided with the lock block is a true lock cavity, and the rest are false lock cavities; the briquetting that corresponds with the locking piece receives when external force extrudees to the main aspects direction slip of lock core, and promote the kicking block through the connecting rod and slide to the direction of keeping away from the valve rod, the locking piece receives the extrusion of kicking block, to the direction withdrawal of keeping away from the valve rod axis in the locking piece chamber, when the locking piece is in time just in complete indentation locking piece chamber, the contact surface of locking piece and kicking block is in time just in the interface of lock core and fixed cover, the locking piece no longer stridees across between the interface of lock core and fixed cover promptly, this moment this locking piece is in the unblock state promptly. If any one pressing block corresponding to the false lock cavity is extruded by external force, the corresponding ejecting block is inserted into the empty lock cavity, namely the ejecting block crosses the interface of the lock core and the fixed sleeve, and the lock core is locked. Only if the lock block of the real lock cavity is in an unlocking state, and simultaneously, the ejector block cannot be inserted into other false lock cavities, the lock cylinder can be unlocked, and the valve rod can rotate when the lock cylinder is in the unlocking state. When the pressing block is subjected to external pressure, the pressing block spring is compressed to store energy; when the pressure on the pressing block disappears, the pressing block is pushed to automatically reset by the tension of the pressing block spring; the lock block is pushed out by the tension of the lock block spring and returns to the state of crossing the interface of the lock core and the fixing sleeve to lock the lock core again. The thief faces the four elastic pressing blocks, and hardly thinks that three pressing blocks can not be pressed, and if any pressing block matched with the false lock cavity is pressed, the top block is inserted into the false lock cavity, and the lock core is locked. The accurate degree of depth must be pressed to the briquetting that matches with real lock chamber, presses not to reach the position then the locking piece unblock, presses the head then the kicking block inserts in the lock chamber again with the lock core locking, therefore the theftproof performance is more excellent.

As a further improvement, the inner end face fixedly connected with of the pressing block is inserted into the insertion pipe in the pressing block spring, the free end inner cavity of the insertion pipe is inserted with the insertion rod coaxial with the insertion pipe, and the root of the insertion rod is fixedly connected to the bottom wall of the lock cylinder. When the pressing block is pressed to compress the pressing block spring, the depth of the free end of the insertion rod inserted into the insertion pipe is deepened; when the pressing block is pressed to disappear and the pressing block spring pushes the pressing block to reset, the inserting depth of the inserting rod in the inserting pipe becomes shallow; under the effect of intubate and inserted bar, the briquetting spring is compressed or is elongated along self axis all the time, can not take place crooked inefficacy phenomenon.

As a further improvement, the periphery of the valve rod is provided with a valve rod groove extending along the axial direction of the valve rod, and the side of each pressing block contacting with the valve rod is embedded in the corresponding valve rod groove respectively. The valve rod groove plays a guiding role in sliding of the pressing block, and meanwhile, the step at the outer end of the valve rod groove limits the pressing block, so that the pressing block is prevented from continuously sliding outwards to form an outer limit position of the pressing block.

As a further improvement of the utility model, the front of locking piece is equipped with the middle high locking piece mushroom head that hangs down all around, and the top piece mushroom head that hangs down all around is equipped with the middle high with the outer end of locking piece matched with top piece. The mushroom head of the top block and the mushroom head of the lock block ensure good contact between the top block and the lock block and allow the position of the lock block to have reasonable errors, namely, if the top point of the lock block and the port of the lock block cavity towards the cylinder side are not absolutely flush, small errors exist, the port in the lock cylinder cavity contacts the cambered surface of the mushroom head of the lock block, the lock block can be completely pushed into the lock block cavity, and the lock cylinder can rotate. Similarly, if the mushroom head of the top block slightly protrudes into the lock block cavity, when the lock core rotates, the cambered surface of the mushroom head of the top block is scraped to the port of the lock block cavity and can be pushed back into the lock core cavity; the oil valve is prevented from being opened by an operator due to too high matching precision.

As a further improvement, the shape and size of each pressing block are the same as the initial position, the length of each connecting rod is the same, and the outer end face of the top block of the non-matched locking block is the inner port parallel and level with the corresponding lock cylinder cavity. The initial condition of each briquetting is the same, has puzzlement nature more, and when special spanner used, must guarantee the correct direction, makes the spanner depression bar must aim at accurate briquetting, just can unblock lock core. Because three kicking blocks matched with the false lock cavity are provided with the flat ends and are located at critical positions, the length of the kicking block is longer than that of the kicking block attached to the lock block, and the kicking block of the flat ends is inserted into the false lock cavity as long as the kicking block is slightly pressed, so that the lock core is firmly locked, and the anti-theft performance is better.

As a further improvement of the utility model, the outer port of the sheath is screwed with the sealing cover. The space where the valve rod is located is closed, so that the phenomenon of freezing and blocking can be prevented.

Drawings

The invention will be described in further detail with reference to the drawings and the detailed description, which are provided for reference and illustration purposes only and are not intended to limit the invention.

Fig. 1 is a schematic structural view of the anti-theft oil valve of the present invention.

FIG. 2 is a port view of the sheath after removal of the closure according to one embodiment.

FIG. 3 is a port view of the sheath with the cap removed according to the second embodiment.

Fig. 4 is a front view of the special spanner.

Fig. 5 is a bottom view of the wrench body of fig. 4.

In the figure: 1. a valve body; 2. a valve stem; 2a, a square tenon of the valve rod; 2b, a valve rod groove; 3. a sheath; 4. a lock case; 5. a lock cylinder; 6. briquetting; 7. a connecting rod; 8. a top block; 8a, top mushroom head; 9. a pressure block spring; 9a, inserting a tube; 9b, inserting the rod; 10. a locking block; 10a, locking block mushroom head; 11. a lock spring; 12. sealing the cover; 13a. a wrench body; a wrench hole; 13c, pressing the wrench rod; and 13d, a handle.

Detailed Description

As shown in fig. 1, the anti-theft oil valve of the present invention comprises a valve rod 2 extending from a valve body 1, wherein an outer end of the valve rod 2 is provided with a valve rod square tenon 2a, the periphery of the valve rod 2 is provided with a sheath 3, an inner end of the sheath 3 is fixed on the valve body 1, a lock shell 4 is welded at the middle section of the sheath 3, the valve rod 2 penetrates out from the bottom wall center of the lock shell 4, a lock cylinder 5 is nested in the inner cavity of the lock shell 4, and the center of the lock cylinder 5 is fixedly connected with the valve rod 2; be equipped with a plurality of both ends openings and the cross-section is the lock core chamber of L shape in the lock core 5, be equipped with briquetting 6 in the outer port in lock core chamber, be equipped with kicking block 8 in the interior port in lock core chamber, the back of briquetting 6 articulates there is connecting rod 7, and the other end of connecting rod 7 is articulated mutually with the back of kicking block 8.

A plurality of lock block cavities extending along the radial direction of the lock shell 4 are arranged in the lock shell 4, and each lock block cavity corresponds to the inner port of the lock cylinder cavity and is smoothly communicated with the inner port of the lock cylinder cavity; a locking block 10 is arranged in one of the locking block cavities, the front surface of the locking block 10 is abutted against the corresponding top block 8, and the back surface of the locking block 10 is supported at the bottom of the locking block cavity through a locking block spring 11; a briquetting spring 9 is respectively arranged between the inner end surface of each briquetting 6 and the bottom wall of the lock core 5.

Because the square tenon 2a of the valve rod is positioned in the inner cavity of the sheath 3, an operator can insert into the inner cavity of the sheath 3 by means of a special tool and rotate the valve rod 2 through the square tenon 2a of the valve rod. The valve rod square tenon 2a is internally provided with a first oil theft prevention measure, the locking mechanism is used as a second oil theft prevention measure, and the lock cylinder 5 with the T-shaped section automatically obtains axial positioning in the lock shell 4.

The lock block cavity provided with the lock block 10 is a true lock cavity, and the rest are false lock cavities. As shown in fig. 2, three cylinder chambers, two of which are false lock chambers, may be provided in the lock cylinder 5. As shown in fig. 3, four cylinder chambers may be provided in the lock cylinder 5, three of which are false lock chambers. Briquetting 6 that corresponds with locking piece 10 receives external force when extrudeing to the big end direction slip of lock core 5 to promote kicking block 8 through connecting rod 7 and slide to the direction of keeping away from valve rod 2, locking piece 10 receives the extrusion of kicking block 8, to the direction withdrawal of keeping away from the valve rod axis in the locking piece chamber, when locking piece 10 just in time is retracted in the locking piece chamber completely, the contact surface of locking piece 10 and kicking block 8 is just in time located the interface of lock core 5 and fixed cover, promptly lock piece 10 no longer stridees across between the interface of lock core 5 and fixed cover, this locking piece 10 is in the unblock state promptly this moment.

If any one of the pressing blocks 6 corresponding to the false lock cavity is also extruded by external force, the corresponding ejecting block 8 is inserted into the empty lock cavity, namely the ejecting block 8 crosses the interface of the lock core 5 and the fixing sleeve, and the lock core 5 is locked. Only if the lock block 10 of the true lock cavity is in an unlocking state, and simultaneously, the ejector block 8 cannot be inserted into other false lock cavities, the lock cylinder 5 can be unlocked, and the valve rod 2 can rotate when the lock cylinder 5 is in the unlocking state.

When the pressing block 6 is subjected to external pressure, the pressing block spring 9 is compressed to store energy; when the pressure on the pressing block 6 disappears, the pressing block 6 is pushed to automatically reset by the tension of the pressing block spring 9; the tension of the lock block spring 11 pushes the lock block 10 out, and the lock block 10 returns to a state of crossing the interface of the lock cylinder 5 and the fixing sleeve to lock the lock cylinder 5 again.

The thief faces the four elastic pressing blocks 6, and hardly thinks that three pressing blocks can not be pressed, and if any pressing block matched with the false lock cavity is pressed, the top block 8 is inserted into the false lock cavity, and the lock core 5 is locked. The pressing block matched with the real lock cavity is required to be pressed to an accurate depth, the lock block 10 is not unlocked if the pressing block is not pressed, and the top block 8 is inserted into the lock cavity to lock the lock cylinder 5 if the pressing block is pressed too far, so that the anti-theft performance is more excellent.

An inserting tube 9a inserted into the pressing block spring 9 is fixedly connected to the inner end face of the pressing block 6, an inserting rod 9b coaxial with the inserting tube is inserted into an inner cavity of the free end of the inserting tube 9a, and the root of the inserting rod 9b is fixedly connected to the bottom wall of the lock cylinder 5. When the pressing block 6 is pressed to compress the pressing block spring 9, the depth of the free end of the inserted rod inserted into the insertion pipe 9a becomes deeper; when the pressing block 6 is pressed to disappear and the pressing block spring 9 pushes the pressing block 6 to reset, the inserting depth of the inserting rod 9b in the inserting pipe 9a becomes shallow; under the action of the insertion pipe 9a and the insertion rod 9b, the pressing block spring 9 is compressed or extended along the axis of the pressing block spring all the time, and the phenomenon of skew failure cannot occur.

The periphery of the valve rod 2 is provided with a valve rod groove 2b extending along the axial direction of the valve rod, and the side surfaces of the pressing blocks 6 contacting with the valve rod 2 are respectively embedded in the corresponding valve rod grooves 2b. The valve rod groove 2b plays a guiding role in guiding the pressing block 6 to slide, and meanwhile, the step at the outer end of the valve rod groove 2b limits the pressing block 6, so that the pressing block 6 is prevented from continuously sliding outwards to form an outer limit position of the pressing block 6.

The front surface of the locking block 10 is provided with a locking block mushroom head 10a with high middle and low periphery, and the outer end head of the top block 8 matched with the locking block 10 is provided with a top block mushroom head 8a with high middle and low periphery. The top block mushroom head 8a and the lock block mushroom head 10a ensure good contact between the top block 8 and the lock block 10, and allow the position of the lock block 10 to have reasonable errors, namely, if the top point of the lock block 10 is not absolutely flush with the port of the lock block cavity towards the cylinder side, a small error exists, the inner port of the lock cylinder cavity is in contact with the cambered surface of the lock block mushroom head 10a, the lock block 10 can be completely pushed into the lock block cavity, and the lock cylinder 5 can rotate. Similarly, if the top block mushroom head 8a slightly protrudes into the lock block cavity, when the lock core 5 rotates, the arc surface of the top block mushroom head 8a scrapes to the port of the lock block cavity and can be pushed back into the lock core cavity; the oil valve is prevented from being opened by an operator due to too high matching precision.

The pressing blocks 6 are the same in shape, size and initial position, the connecting rods 7 are the same in length, and the outer end face of the top block 8 which is not matched with the locking block 10 is a plane and is flush with the inner port of the corresponding lock cylinder cavity. The initial state of each briquetting 6 is the same, has puzzlement nature more, and when special spanner used, must guarantee the correct direction, makes the spanner depression bar must aim at accurate briquetting 6, just can unblock lock core 5. Because the three ejector blocks matched with the false lock cavity are provided with the flat ends and are positioned at critical positions, the length of the ejector block is longer than that of the ejector block attached to the lock block 10, and as long as the ejector block is slightly pressed, the ejector block 8 of the flat ends is inserted into the false lock cavity, so that the lock core 5 is firmly locked, and the anti-theft performance is better.

The outer port of the sheath 3 is screwed with a sealing cover 12 to seal the space where the valve rod 2 is located, so that the freezing and blocking phenomena can be prevented.

As shown in fig. 4 and 5, the oil valve is provided with a special wrench, the special wrench includes a wrench body 13a, a wrench hole 13b adapted to and penetrating through the valve rod square tenon 2a is provided at the center of the wrench body 13a, and a handle 13d is connected to an outer end surface of the wrench body 13a. A wrench pressure lever 13c is arranged on the circumference of the inner end surface of the wrench body 13 a; when the wrench pressure lever 13c pushes the pressing block 6 corresponding to the lock block 10 to the bottom, the front surface of the lock block 10 is flush with the core-facing side port of the lock block cavity.

An operator holds the handle 13d, the wrench pressure rod 13c is aligned to the press block 6 corresponding to the true lock cavity and is extruded inwards, in the process that the press block 6 is forced to retreat, the wrench hole 13b is sleeved on the valve rod square tenon 2a and continues to be pushed towards the root of the valve rod square tenon 2a, when the wrench hole 13b is pushed to the bottom, the wrench pressure rod 13c pushes the press block 6 to the inner limit position, the press block 6 pushes the top block 8 to the position through the connecting rod 7, the front face of each lock block 10 is flush with the core-side port of the lock block cavity at the moment, namely, the lock core 5 is located at the unlocking position, the valve rod square tenon 2a and the lock core 5 can be screwed by rotating the handle 13d, and the valve rod 2 rotates the valve core to the opening position.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention. The undescribed technical features of the present invention can be realized by or using the prior art, and are not described herein again.

Claims

1. The utility model provides an anti-theft oil valve, includes the valve rod that stretches out from the valve body, the outer terminal head of valve rod is equipped with valve rod square tenon, its characterized in that: a sheath is arranged on the periphery of the valve rod, the inner end of the sheath is welded on the valve body, a lock shell is welded in the middle section of the sheath, the valve rod penetrates out of the center of the bottom wall of the lock shell, a lock cylinder is nested in the inner cavity of the lock shell, and the center of the lock cylinder is welded on the valve rod; the lock core is internally provided with three or four lock core cavities with openings at two ends and L-shaped sections, a pressing block is arranged in an outer port of each lock core cavity, an ejecting block is arranged in an inner port of each lock core cavity, the back of each pressing block is hinged with a connecting rod, and the other end of each connecting rod is hinged with the back of the ejecting block; the lock shell is internally provided with a plurality of lock block cavities extending along the radial direction of the lock shell, and each lock block cavity corresponds to the inner port of the lock cylinder cavity and is smoothly communicated with the inner port of the lock cylinder cavity; a locking block is arranged in one of the locking block cavities, the front surface of the locking block is abutted against the corresponding ejector block, and the back surface of the locking block is supported at the bottom of the locking block cavity through a locking block spring; and a pressing block spring is arranged between the inner end surface of each pressing block and the bottom wall of the lock cylinder.

2. The anti-theft oil valve according to claim 1, characterized in that: the inner end face of the pressing block is fixedly connected with an insertion pipe inserted into the pressing block spring, an insertion rod coaxial with the insertion pipe is inserted into an inner cavity of the free end of the insertion pipe, and the root of the insertion rod is fixedly connected to the bottom wall of the lock cylinder.

3. The anti-theft oil valve according to claim 1, characterized in that: the periphery of the valve rod is provided with a valve rod groove extending along the axial direction of the valve rod, and the side surfaces of the pressing blocks, which are contacted with the valve rod, are respectively embedded in the corresponding valve rod grooves.

4. The anti-theft oil valve according to claim 1, 2 or 3, characterized in that: the front of the locking piece is provided with a locking piece mushroom head with high middle and low periphery, and the outer end of the ejector piece matched with the locking piece is provided with an ejector piece mushroom head with high middle and low periphery.

5. The anti-theft oil valve according to claim 1, 2 or 3, characterized in that: the shape, size and initial position of each briquetting are the same, and the length of each connecting rod is the same, and the outer terminal surface of the kicking block that does not support the locking piece is the plane and with the inner port parallel and level in corresponding lock core chamber.

6. The anti-theft oil valve according to claim 1, 2 or 3, characterized in that: the outer port of the sheath is screwed with a sealing cover.