Online replacement device for buried ball valve grease injection valve

Abstract

The utility model relates to a buried ball valve grease injection valve on-line replacing device which comprises an upper sleeve, a ball valve and a lower sleeve which are communicated in sequence, one end, far away from the ball valve, of the lower sleeve is used for being sleeved on a grease injection pipe and detachably connected with a clamp used for being fixed on the grease injection pipe, and the upper sleeve and the lower sleeve are sleeved on the upper sleeve. A screwing rod is slidably and rotatably connected in the upper sleeve, the ball valve and the lower sleeve at the same time, one end of the screwing rod is provided with a mounting hole used for being matched with a grease injection valve, the other end of the screwing rod extends out of the upper sleeve, and a sealing assembly which is arranged on the outer side of the screwing rod in a sleeving and sealing mode is detachably connected in the upper sleeve. According to the utility model, the disassembly and assembly with the buried ball valve grease injection pipe can be quickly realized, the replacement work of the buried ball valve grease injection pipe can be realized on line, and the normal operation of a pipeline is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to an online replacement device for a grease injection valve of a buried ball valve. Background Art

[0002] Reference Figure 5 The buried ball valve 1 is one of the most important control equipment in the long-distance trunk pipeline gas transmission valve room and other places. The reliable operation of the buried ball valve 1 is a necessary condition for pipeline safety. There is a grease injection valve 12 on the grease injection pipe 11 of the buried ball valve 1. The grease injection valve 12 is a key equipment for the maintenance of the buried ball valve 1. Its safety and reliability can ensure the lubrication of the ball valve, and achieve the flexible switching of the ball valve and reliable cut-off function. When the grease injection valve is damaged, the ball valve will not be able to be lubricated, and the means to deal with the internal leakage of the ball valve will be lost. In addition, the leakage of natural gas due to the failure of the grease injection valve may cause production safety accidents. Among them, the end of the grease injection pipe 11 close to the grease injection valve 12 is in the shape of a stepped shaft, and the cross-sectional size gradually increases from bottom to top, and the shoulder is an upward inclined surface 111. Utility Model Content

[0003] The utility model provides an online replacement device for a buried ball valve grease injection valve, which can quickly realize the disassembly and assembly of the buried ball valve grease injection pipe, realize the replacement of the buried ball valve grease injection valve online, and ensure the normal operation of the pipeline.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] An online replacement device for a buried ball valve grease injection valve comprises an upper sleeve, a ball valve and a lower sleeve which are connected in sequence, the end of the lower sleeve away from the ball valve being used for being sleeved on a grease injection tube and being detachably connected to a fixture for fixing to the grease injection tube, a screw rod being slidably and rotatably connected inside the upper sleeve, the ball valve and the lower sleeve, one end of the screw rod being provided with a mounting hole for adapting to the grease injection valve, and the other end extending out of the upper sleeve, the upper sleeve being detachably connected to a sealing component which is sleeved on and sealedly connected to the outside of the screw rod.

[0006] The beneficial effects of the utility model are as follows: when replacing the grease injection valve, the lower casing is sleeved on the grease injection tube, and is fixed to the grease injection tube by a clamp detachably connected to the lower casing, so that the grease injection tube of the buried ball valve can be quickly disassembled and assembled; then the replacement action is performed, the ball valve is opened, the screw rod is brought into contact with the grease injection valve, so that the grease injection valve enters the installation hole, the screw rod is rotated, the grease injection valve is removed, and taken out, and finally a new grease injection valve is replaced and installed, so that the replacement work of the grease injection valve of the buried ball valve can be realized online, and the normal operation of the pipeline can be ensured; after the removed grease injection valve passes through the ball valve, the ball valve can be closed to prevent gas from leaking directly through the ball valve.

[0007] On the basis of the above technical solution, the present invention can also be improved as follows.

[0008] Furthermore, the clamp includes two clamps, a first fastener connected to the two clamps and the lower sleeve respectively, and a second fastener connected to the two clamps. A through groove for the grease injection tube to pass through is provided on one side of the two clamps abutting against each other, and the two clamps are provided with a clamping structure for fixing the grease injection tube.

[0009] The beneficial effect of adopting the above further solution is that the first fastener and the second fastener can be used to realize the disassembly and assembly of the clamp with the lower casing and the grease injection tube respectively.

[0010] Furthermore, the clamping structure includes an arc surface opened on one side of the two clamping plates, the arc surface is connected to the through groove, and is used to cooperate with the inclined surface of the grease injection pipe close to the grease injection valve.

[0011] The beneficial effect of adopting the above further solution is that when installing the entire device, the installation positioning of the clamping plate can be achieved by abutting the arc surface against the inclined surface, and the installation positioning of the lower casing and the entire device can be further achieved to achieve rapid installation.

[0012] Furthermore, the upper sleeve is connected to a relief valve, and the relief valve is connected to a portion of the upper sleeve located between the ball valve and the sealing assembly.

[0013] The beneficial effect of adopting the above further solution is that when the grease injection valve is taken out, the pressure can be released by opening the relief valve to ensure safety.

[0014] Furthermore, the lower sleeve is used to be sleeved on the inner side of one end of the grease injection tube and is detachably connected with at least one first sealing ring.

[0015] The beneficial effect of adopting the above further solution is: the sealing between the lower casing and the grease injection tube is improved by the first sealing ring to prevent gas leakage.

[0016] Furthermore, the lower casing is connected to a pressure gauge and an air supply component.

[0017] The beneficial effect of adopting the above-mentioned further scheme is: the pressure gauge measures the air pressure in the cavity formed by the lower casing, and after removing the grease injection valve, the air pressure in the cavity of the lower casing can be monitored in real time; before removing the grease injection valve, the air supply assembly can be used to inflate the cavity of the lower casing, and through the pressure feedback of the pressure gauge, it can be detected whether a good sealing effect is formed between the lower casing and the natural gas pipeline.

[0018] Furthermore, the gas supply assembly includes a high-pressure ball valve whose air inlet end is connected to the lower casing, a high-pressure hose whose one end is connected to the air outlet end of the high-pressure ball valve, and a gas supply bottle connected to the other end of the high-pressure hose.

[0019] The beneficial effect of adopting the above further solution is: using the gas supply bottle to inflate the lower casing cavity, so as to feedback the sealing effect of the cavity through the pressure of the pressure gauge.

[0020] Furthermore, the upper casing is threadedly connected to one end of the ball valve, and the other end of the ball valve is threadedly connected to one end of the lower casing.

[0021] The beneficial effect of adopting the above further solution is to facilitate the rapid disassembly and assembly of the upper casing, the ball valve and the lower casing.

[0022] Furthermore, the sealing assembly includes a mounting sleeve detachably connected to the upper sleeve and at least one second sealing ring detachably connected to the inner side of the mounting sleeve, and the inner side of the second sealing ring abuts against the outer side of the screw rod.

[0023] The beneficial effect of adopting the above further solution is that the sealing effect is ensured by the second sealing ring.

[0024] Furthermore, the inner hole of the upper sleeve is a stepped hole, and the inner hole diameter of one end connected to the ball valve is larger than that of the other end. The mounting sleeve is adapted and slidably connected to the end with a larger hole diameter and abuts against the hole shoulder.

[0025] The beneficial effects of adopting the above further solution are: to facilitate the rapid assembly and disassembly of the installation sleeve, to form a limit by abutting the installation sleeve against the hole shoulder, and to improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0028] Figure 3 It is a partial structural schematic diagram of the utility model, mainly showing the first scheme of the clamp;

[0029] Figure 4 It is an axonometric view of another solution of the clamp of the utility model;

[0030] Figure 5 It is a structural schematic diagram of a buried earth valve in the related art.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 1. buried globe valve; 11. grease injection pipe; 111. inclined plane; 12. grease injection valve;

[0033] 2. Install casing; 21. Release valve;

[0034] 3. Ball valve;

[0035] 4. Lower casing; 41. First sealing ring; 42. Pressure gauge; 43. Gas supply assembly; 431. High-pressure ball valve; 432. High-pressure hose; 433. Gas supply bottle;

[0036] 5. fixture; 51. clamp; 511. through slot; 512. arc surface; 52. first fastener; 53. second fastener;

[0037] 6. Twist rod; 61. Mounting hole;

[0038] 7. Sealing assembly; 71. Mounting sleeve; 72. Second sealing ring. DETAILED DESCRIPTION

[0039] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0040] Example 1

[0041] like Figure 1 and Figure 2 , an online replacement device for a buried globe valve grease injection valve, comprising an upper sleeve 2, a ball valve 3 and a lower sleeve 4 which are connected in sequence, the end of the lower sleeve 4 away from the ball valve 3 is used to be sleeved on a grease injection tube 11, and is detachably connected to a clamp 5 for fixing to the grease injection tube 11, a screw rod 6 is slidably and rotatably connected in the upper sleeve 2, the ball valve 3 and the lower sleeve 4 at the same time, one end of the screw rod 6 is provided with a mounting hole 61 for adapting to the grease injection valve 12, and the other end extends out of the upper sleeve 2, and a sealing component 7 which is sleeved and sealedly connected to the outside of the screw rod 6 is also detachably connected in the upper sleeve 2.

[0042] The beneficial effects of this embodiment are as follows: when replacing the grease injection valve 12, the lower sleeve 4 is sleeved on the grease injection tube 11, and is fixed to the grease injection tube 11 by a clamp 5 detachably connected to the lower sleeve 4, so that the grease injection tube 11 can be quickly disassembled and assembled; then the replacement action is performed, the ball valve 3 is opened, the screw rod 6 is brought into contact with the grease injection valve 12, so that the grease injection valve 12 enters the mounting hole 61, the screw rod 6 is rotated, the grease injection valve 12 is removed, and taken out, and finally a new grease injection valve 12 is replaced and installed, so as to realize the replacement work of the buried ball valve grease injection valve online and ensure the normal operation of the pipeline; after the removed grease injection valve 12 passes through the ball valve 3, the ball valve 3 can be closed to prevent the gas from leaking directly through the ball valve 3.

[0043] Specifically, the mounting hole 61 at one end of the screw rod 6 is a polygonal hole adapted to the grease injection valve 12, and the hole depth is greater than the tightening distance of the grease injection valve 12 to ensure the screwing effect. The other end of the screw rod 6 extending out of the upper sleeve 2 is a polygonal rod, so that the screw rod 6 can be screwed with a wrench.

[0044] When disassembling the sealing assembly 7, the ball valve 3 is separated from the upper sleeve 2 and then the disassembly can be carried out.

[0045] Furthermore, a permanent magnet is provided in the mounting hole 61 to absorb and remove the grease injection valve 12 after it is loosened.

[0046] Furthermore, the screw rod 6 includes a rod body and a fixing rod connected to the end of the rod body by a clamping method, and a mounting hole 61 is opened in the fixing rod so as to match the size of the grease injection valve 12 by replacing the fixing rod.

[0047] Example 2

[0048] like Figure 2 and Figure 3 On the basis of Example 1, the clamp 5 includes two clamps 51, a first fastener 52 connected to the two clamps 51 and the lower sleeve 4 respectively, and a second fastener 53 connected to the two clamps 51. A through groove 511 for the grease injection tube 11 to pass through is provided on one side where the two clamps 51 abut each other, and the two clamps 51 are provided with a clamping structure for fixing the grease injection tube 11.

[0049] The beneficial effect of adopting the preferred solution in the above embodiment is that the first fastener 52 and the second fastener 53 can be used to realize the disassembly and assembly of the clamp 5 with the lower casing 4 and the grease injection tube 11 respectively.

[0050] Specifically, the first fastener 52 and the second fastener 53 can both be bolts or a combination of bolts and nuts. As a parallel solution, a snap-fit ​​structure can also be used for detachable connection.

[0051] Specifically, the vertical section of the clamping plate 51 is in an "L" shape (eg Figure 3 ) or a rectangle (such as Figure 4 ).

[0052] Furthermore, a flexible layer is bonded inside the through groove 511 and / or on the side where the clamp 51 abuts against the lower sleeve 4 to improve the fixing effect between the through groove 511 and the grease injection tube 11 and the sealing effect between the clamp 51 and the lower sleeve 4, while allowing the clamp 51 to clamp grease injection tubes 11 of different sizes.

[0053] Example 3

[0054] like Figure 2 and Figure 4On the basis of embodiments 1 and 2, the clamping structure includes an arc surface 512 opened on one side of the two clamping plates 51, the arc surface 512 is connected to the through groove 511, and is used to cooperate with the inclined surface 111 of the grease injection pipe 11 close to the grease injection valve 12.

[0055] The beneficial effect of adopting the preferred solution in the above embodiment is that when installing the entire device, the installation positioning of the clamping plate 51 can be achieved by abutting the curved surface 512 against the inclined surface 111, and the installation positioning of the lower casing 4 and the entire device can be further achieved to achieve quick installation.

[0056] Example 4

[0057] like Figure 1 and Figure 2 On the basis of embodiments 1-3, the upper casing 2 is connected to a relief valve 21, and the relief valve 21 is connected to a portion of the upper casing 2 between the ball valve 3 and the sealing assembly 7.

[0058] The beneficial effect of adopting the preferred solution in the above embodiment is that when the grease injection valve 12 is taken out, the pressure can be released by opening the relief valve 21 to ensure safety.

[0059] Example 5

[0060] like Figure 1 and Figure 2 On the basis of embodiments 1-4, the lower sleeve 4 is used to be sleeved on the inner side of one end of the grease injection tube 11 and is detachably connected to at least one first sealing ring 41.

[0061] The beneficial effect of adopting the preferred solution in the above embodiment is that the sealing between the lower casing 4 and the grease injection tube 11 is improved by the first sealing ring 41 to prevent gas leakage.

[0062] Example 6

[0063] like Figure 1 and Figure 2 On the basis of embodiments 1-5, the lower casing 4 is connected to a pressure gauge 42 and an air supply assembly 43.

[0064] The beneficial effect of adopting the preferred scheme in the above embodiment is that the pressure gauge 42 measures the size of the air pressure in the cavity formed by the lower casing 4. After the grease injection valve 12 is removed, the air pressure in the cavity of the lower casing 4 can be monitored in real time; before removing the grease injection valve 12, the air supply component 43 can be used to inflate the cavity of the lower casing 4. Through the pressure feedback of the pressure gauge 42, it can be detected whether a good sealing effect is formed between the lower casing 4 and the natural gas pipeline.

[0065] Example 7

[0066] like Figure 1 and Figure 2On the basis of Examples 1-6, the air supply assembly 43 includes a high-pressure ball valve 431 whose air inlet end is connected to the lower casing 4, a high-pressure hose 432 whose one end is connected to the air outlet end of the high-pressure ball valve 431, and a gas supply bottle 433 connected to the other end of the high-pressure hose 432.

[0067] The beneficial effect of adopting the preferred solution in the above embodiment is that the gas supply bottle 433 is used to inflate the cavity of the lower casing 4 so as to provide the sealing effect of the cavity through the pressure feedback of the pressure gauge 42 .

[0068] Specifically, when in use, nitrogen can be stored in the gas supply bottle 433 .

[0069] Example 8

[0070] like Figure 1 and Figure 2 On the basis of Embodiment 1-7, the upper casing 2 is threadedly connected to one end of the ball valve 3, and the other end of the ball valve 3 is threadedly connected to one end of the lower casing 4.

[0071] The beneficial effect of adopting the preferred solution in the above embodiment is that it is convenient to quickly realize the rapid disassembly and assembly of the upper casing 2, the ball valve 3 and the lower casing 4.

[0072] Furthermore, sealing layers are provided on the threaded connection ends of the upper sleeve 2 and the ball valve 3 and on the threaded connection ends of the ball valve 3 and the lower sleeve 4 to improve the sealing effect and reduce gas leakage.

[0073] Example 9

[0074] like Figure 1 and Figure 2 On the basis of embodiments 1-8, the sealing assembly 7 includes a mounting sleeve 71 detachably connected to the upper sleeve 2 and at least one second sealing ring 72 detachably connected to the inner side of the mounting sleeve 71 , and the inner side of the second sealing ring 72 abuts against the outer side of the screw rod 6 .

[0075] The beneficial effect of adopting the preferred solution in the above embodiment is that the sealing effect is ensured by the second sealing ring 72. Specifically, the second sealing ring 72 can be made of rubber.

[0076] Example 10

[0077] like Figure 1 and Figure 2 On the basis of embodiments 1-9, the inner hole of the upper sleeve 2 is a stepped hole, and the inner hole diameter of one end connected to the ball valve 3 is larger than that of the other end. The mounting sleeve 71 is adapted and slidably connected to the end with a larger hole diameter and abuts against the hole shoulder.

[0078] The beneficial effect of adopting the preferred solution in the above embodiment is that it is easy to quickly realize the disassembly and assembly of the installation sleeve 71, and the installation sleeve 71 is used to abut against the hole shoulder to form a limit, thereby improving the sealing effect.

[0079] Furthermore, the inner hole of at least one end of the upper sleeve 2 connected to the ball valve 3 is a polygonal hole to prevent the installation sleeve 71 from rotating and / or moving during the rotation and movement of the screw rod 6.

[0080] Furthermore, at least one sealing ring is also sleeved on the outer side of the mounting sleeve 71 to increase the friction between the mounting sleeve 71 and the upper sleeve 2 and to improve the sealing effect. Furthermore, a limiting ring groove is provided on the inner wall of the upper sleeve 2 for the sealing ring to enter, forming a limit, and further preventing the sealing assembly 7 from sliding downward in a natural state.

[0081] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0082] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0083] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0086] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An online replacement device for a buried ball valve grease injection valve, characterized in that: The invention comprises an upper sleeve (2), a ball valve (3) and a lower sleeve (4) which are connected in sequence. The end of the lower sleeve (4) away from the ball valve (3) is used for being sleeved on a grease injection pipe (11) and is detachably connected to a clamp (5) for fixing on the grease injection pipe (11). A screw rod (6) is slidably and rotatably connected inside the upper sleeve (2), the ball valve (3) and the lower sleeve (4). One end of the screw rod (6) is provided with a mounting hole (61) for adapting to the grease injection valve (12), and the other end extends out of the upper sleeve (2). A sealing component (7) which is sleeved and sealedly connected to the outside of the screw rod (6) is detachably connected inside the upper sleeve (2).

2. According to claim 1, an online replacement device for a buried ball valve grease injection valve is characterized in that: The clamp (5) comprises two clamping plates (51), a first fastener (52) respectively connected to the two clamping plates (51) and the lower casing (4), and a second fastener (53) connected to the two clamping plates (51). A through groove (511) for the grease injection tube (11) to pass through is provided on one side of the two clamping plates (51) abutting against each other, and the two clamping plates (51) are provided with a clamping structure for fixing the grease injection tube (11).

3. According to claim 2, an online replacement device for a buried ball valve grease injection valve is characterized in that: The clamping structure comprises an arc surface (512) formed on one side of the two clamping plates (51), the arc surface (512) being in communication with the through groove (511) and being used to cooperate with an inclined surface (111) of the grease injection pipe (11) close to the grease injection valve (12).

4. According to claim 1, the online replacement device for buried ball valve grease injection valve is characterized in that: The upper sleeve (2) is connected to a discharge valve (21), and the discharge valve (21) is connected to a portion of the upper sleeve (2) located between the ball valve (3) and the sealing assembly (7).

5. According to claim 1, the online replacement device for buried ball valve grease injection valve is characterized in that: The lower sleeve (4) is used to be sleeved on one end of the grease injection tube (11), and is detachably connected to at least one first sealing ring (41) on its inner side.

6. According to claim 1, the online replacement device for buried ball valve grease injection valve is characterized in that: The lower casing (4) is connected to a pressure gauge (42) and an air supply component (43).

7. According to claim 6, an online replacement device for a buried ball valve grease injection valve is characterized in that: The gas supply assembly (43) comprises a high-pressure ball valve (431) whose gas inlet end is connected to the lower casing (4), a high-pressure hose (432) whose one end is connected to the gas outlet end of the high-pressure ball valve (431), and a gas supply bottle (433) connected to the other end of the high-pressure hose (432).

8. The online replacement device for a buried ball valve grease injection valve according to any one of claims 1 to 6, characterized in that: The upper sleeve (2) is threadedly connected to one end of the ball valve (3), and the other end of the ball valve (3) is threadedly connected to one end of the lower sleeve (4).

9. The online replacement device for buried ball valve grease injection valve according to claim 8, characterized in that: The sealing assembly (7) comprises a mounting sleeve (71) detachably connected to the inside of the upper sleeve (2) and at least one second sealing ring (72) detachably connected to the inner side of the mounting sleeve (71), wherein the inner side of the second sealing ring (72) abuts against the outer side of the screw rod (6).

10. The online replacement device for buried ball valve grease injection valve according to claim 9, characterized in that: The inner hole of the upper sleeve (2) is a stepped hole, and the inner hole diameter of one end connected to the ball valve (3) is larger than that of the other end. The mounting sleeve (71) is adapted and slidably connected to the end with the larger hole diameter and abuts against the hole shoulder.

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