Sealing structure of direct connection type tubing nipple combined valve with good sealing effect

Abstract

The utility model provides a sealing structure of a direct connection type tubing nipple combined valve, which relates to the technical field of hydraulic valves and comprises a valve body, an oil pipe arranged on the valve body, a first flange plate fixed on the valve body, a second flange plate fixed on the oil pipe, and bolts in threaded connection with the first flange plate and the second flange plate. A nut is in threaded connection with the bolt, a sealing assembly is arranged between the valve body and the oil pipe, an operator places the first rubber pad in a groove formed in the first fixing ring, the valve body is in butt joint with the oil pipe, and the valve body and the oil pipe can be fixedly connected through cooperation of the bolt and the nut; the first fixing rings on the first flange plate and the second flange plate extrude the first rubber pad, so that the first rubber pad fills the whole interior of the groove, the second rubber pad fixed to the rubber supporting ring is tightly attached to the valve body and the inner wall of the oil pipe, liquid leakage is prevented, and therefore the better sealing effect of the direct connection type oil pipe nipple combined valve is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valves, in particular to a sealing structure of a direct-connected oil pipe short-joint combined valve with good sealing effect. Background Art

[0002] Direct-connected oil pipe nipple combination valves are usually used in pipeline systems to control the flow or stop of fluids. Since the liquid flowing through the oil inlet pipe of the valve body is under high pressure, it is necessary to consider the sealing performance of the connection between the valve and the oil pipe to prevent leakage and ensure stable system operation.

[0003] The existing patent (publication number: CN212509926U) proposes an oil pipe short joint assembly for an oil pipeline. The utility model is a oil pipe short joint assembly for an oil pipeline. It is convenient to connect the first connecting flange and the second connecting flange with the first connecting pipe and the second connecting pipe through the connecting assembly, and it is convenient to effectively increase the air tightness of the connection between the first connecting flange and the second connecting flange through the sealing gasket, thereby effectively improving the stability of the connection between the first connecting pipe and the second connecting pipe.

[0004] However, the existing oil pipe short section assemblies for oil pipelines usually have poor sealing effects at the joints, and poor sealing may cause the medium to leak out from the sealing part of the valve. Leakage may lead to waste of energy. If the liquid leaks out uncontrollably, a large amount of energy will be wasted, and production costs will increase. The leaked medium will pollute the surrounding environment, affect the environmental quality, and may even have a long-term impact on the ecosystem. Leakage may lead to safety hazards, especially for some flammable and explosive media, which may cause serious accidents such as fire or explosion. Therefore, the utility model proposes a sealing structure of a direct-connected oil pipe short section combined valve with good sealing effect to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a sealing structure of a direct-connected oil pipe short-joint combined valve with good sealing effect.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sealing structure of a direct-connected oil pipe short joint combined valve with good sealing effect, comprising a valve body, an oil pipe is arranged on the valve body, a first flange is fixed on the valve body, a second flange is fixed on the oil pipe, bolts are threadedly connected on the first flange and the second flange, nuts are threadedly connected on the bolts, and a sealing assembly is arranged between the valve body and the oil pipe;

[0007] The sealing assembly comprises a first fixing ring, a groove is formed on the first fixing ring, a first rubber pad is arranged in the groove, a rubber supporting ring is fixed on the first rubber pad, and a second rubber pad is fixed on the rubber supporting ring.

[0008] As a preferred embodiment of the sealing structure of a direct-connected oil pipe short-joint combined valve with good sealing effect, the first fixing ring is fixed on the first flange and the second flange respectively, and the second rubber pad is arranged in the oil pipe and the first flange.

[0009] The beneficial effect of adopting the above further scheme is: since the first fixing ring is respectively fixed on the first flange and the second flange, the groove provided on the first fixing ring can accommodate the first rubber pad, and since the second rubber pad is arranged in the oil pipe and the first flange, the second rubber pad limits the first rubber pad, thereby preventing the first rubber pad from moving when the valve body and the oil pipe are fixedly connected, thereby preventing the first rubber pad from failing to achieve a sealing effect.

[0010] As a preferred embodiment of the sealing structure of a direct-connection oil pipe nipple combined valve with good sealing effect, the top diameter of the first rubber pad is larger than the bottom diameter.

[0011] The beneficial effect of adopting the above further solution is: because the top diameter of the first rubber pad is larger than the bottom diameter, when the first rubber pad is squeezed by the first fixing ring, the first rubber pad will fill the groove opened on the first fixing ring to achieve a better sealing effect.

[0012] As a preferred embodiment of the sealing structure of a direct-connection oil pipe short-joint combined valve with good sealing effect, one side of the second rubber pad is arc-shaped.

[0013] The beneficial effect of adopting the above further solution is that since one side of the second rubber pad is arc-shaped, when the valve body and the oil pipe are fixed, the rubber support ring will not be warped on both sides due to squeezing, preventing the second rubber pad from not fitting against the valve body and the inner wall of the oil pipe.

[0014] As a preferred embodiment of the sealing structure of a direct-connected oil pipe short-section combination valve with good sealing effect, a positioning assembly is arranged on the first flange plate, and the positioning assembly includes a positioning column, a second fixing ring is fixed on the positioning column, and the second fixing ring is fixed in the hole of the first flange plate.

[0015] The beneficial effect of adopting the above further scheme is: when the valve body needs to be connected to the oil pipe, the positioning column is inserted into the hole on the second flange through the positioning column set in the hole on the first flange. When the holes are aligned, the bolts are screwed into the holes, and the second fixing ring is destroyed by external force, causing the positioning column to fall off.

[0016] As a preferred embodiment of the sealing structure of a direct-connection oil pipe nipple combined valve with good sealing effect, the positioning column is arranged in the hole of the first flange.

[0017] The beneficial effect of adopting the above further solution is that since the positioning column is arranged in the hole on the first flange, the holes on the first flange and the second flange can be easily positioned and aligned.

[0018] Compared with the prior art, the advantages and positive effects of the utility model are:

[0019] 1. The operator places the first rubber pad in the groove opened on the first fixing ring, connects the valve body with the oil pipe, and through the cooperation of the provided bolts and nuts, the valve body and the oil pipe can be fixedly connected. The first fixing ring on the first flange and the second flange squeezes the first rubber pad so that the first rubber pad fills the entire interior of the groove. The second rubber pad fixed on the rubber support ring is in close contact with the inner wall of the valve body and the oil pipe to prevent liquid leakage, thereby achieving a better sealing effect of the direct-connected oil pipe short-section combined valve.

[0020] 2. When the operator needs to connect the valve body to the oil pipe, the positioning column set in the hole on the first flange is inserted into the hole on the second flange. When the holes are aligned, the bolts are screwed into the holes, and the second fixing ring is destroyed by external force, so that the positioning column falls off, thereby solving the technical problem that the holes of the first flange and the second flange are inconvenient to align when connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a sealing structure of a direct-connected oil pipe short-joint combined valve with good sealing effect according to the utility model;

[0022] Figure 2 It is a schematic diagram of the sealing assembly structure of a sealing structure of a direct-connected oil pipe short-joint combined valve with good sealing effect according to the utility model;

[0023] Figure 3 It is a cross-sectional view of the sealing assembly structure of a direct-connected oil pipe short-joint combined valve with good sealing effect according to the utility model;

[0024] Figure 4 The utility model is a schematic diagram of the positioning component structure of the sealing structure of a direct-connected oil pipe short-joint combined valve with good sealing effect.

[0025] Reference numerals

[0026] 1. Valve body; 2. Oil pipe; 3. First flange; 4. Second flange; 5. Bolts; 6. Nuts; 7. Sealing assembly; 71. First fixing ring; 72. Groove; 73. First rubber pad; 74. Rubber support ring; 75. Second rubber pad; 8. Positioning assembly; 81. Positioning column; 82. Second fixing ring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1

[0029] like Figure 1-3 As shown, a sealing structure of a direct-connected oil pipe short joint combined valve with good sealing effect comprises a valve body 1, an oil pipe 2 is arranged on the valve body 1, a first flange 3 is fixed on the valve body 1, a second flange 4 is fixed on the oil pipe 2, bolts 5 are threadedly connected to the first flange 3 and the second flange 4, nuts 6 are threadedly connected to the bolts 5, and a sealing assembly 7 is arranged between the valve body 1 and the oil pipe 2;

[0030] The sealing assembly 7 includes a first fixing ring 71, a groove 72 is provided on the first fixing ring 71, a first rubber pad 73 is provided in the groove 72, a rubber support ring 74 is fixed on the first rubber pad 73, and a second rubber pad 75 is fixed on the rubber support ring 74. The first rubber pad 73 is placed in the groove 72 provided on the first fixing ring 71, and the valve body 1 is connected to the oil pipe 2. The valve body 1 and the oil pipe 2 can be fixedly connected by the cooperation of the provided bolts 5 and nuts 6. The first fixing ring 71 on the first flange 3 and the second flange 4 squeezes the first rubber pad 73 so that the first rubber pad 73 fills the entire interior of the groove 72. The second rubber pad 75 fixed on the rubber support ring 74 is in close contact with the inner walls of the valve body 1 and the oil pipe 2, which can ensure that the connection between the valve body 1 and the oil pipe 2 is well sealed, thereby preventing liquid leakage.

[0031] Example 2

[0032] like Figure 1-4As shown, the first fixing ring 71 is fixed on the first flange 3 and the second flange 4 respectively, and the second rubber pad 75 is arranged in the oil pipe 2 and the first flange 3. Since the first fixing ring 71 is fixed on the first flange 3 and the second flange 4 respectively, the groove 72 provided on the first fixing ring 71 can accommodate the first rubber pad 73. Since the second rubber pad 75 is arranged in the oil pipe 2 and the first flange 3, the second rubber pad 75 limits the first rubber pad 73, thereby preventing the first rubber pad 73 from moving when the valve body 1 and the oil pipe 2 are fixedly connected, and failing to achieve a sealing effect. The top diameter of the first rubber pad 73 is larger than the bottom diameter. Since the top diameter of the first rubber pad 73 is larger than the bottom diameter, when the first rubber pad 73 is squeezed by the first fixing ring 71, the first rubber pad 73 will fill the groove 72 opened on the first fixing ring 71 to ensure effective sealing performance between the two first fixing rings 71. One side of the second rubber pad 75 is arc-shaped. Since one side of the second rubber pad 75 is arc-shaped, when the valve body 1 and the oil pipe 2 are fixed, the rubber support ring 74 will not be warped on both sides due to squeezing, so as to prevent the second rubber pad 75 from being entangled with the valve body 1 and the inside of the oil pipe 2. The wall does not fit, and the arc-shaped design can make the second rubber pad 75 better fit the oil pipe 2 and the valve body 1, so as to provide a more reliable sealing and buffering effect. A positioning component 8 is provided on the first flange 3, and the positioning component 8 includes a positioning column 81. A second fixing ring 82 is fixed on the positioning column 81. The second fixing ring 82 is fixed in the hole of the first flange 3. When the valve body 1 needs to be connected to the oil pipe 2, the positioning column 81 provided in the hole of the first flange 3 is used. The positioning column 81 provides a reference point through its fixed position on the first flange 3. The positioning column 81 is inserted into the second In the hole on the flange 4, when the holes are aligned, the bolt 5 is screwed into the hole, and the second fixing ring 82 is destroyed by external force, so that the positioning column 81 falls off, which can ensure that during the assembly process, the connection between the first flange 3 and the second flange 4 can be accurately aligned, thereby ensuring the accuracy and reliability of the assembly. The positioning column 81 is arranged in the hole of the first flange 3. Since the positioning column 81 is arranged in the hole on the first flange 3, the holes on the first flange 3 and the second flange 4 can be easily positioned and aligned, thereby achieving accurate alignment and connection during the assembly process.

[0033] Working principle:

[0034] like Figure 1-4As shown, first, the operator places the first rubber pad 73 in the groove 72 provided on the first fixing ring 71, docks the valve body 1 with the oil pipe 2, and inserts the positioning column 81 into the hole on the second flange 4 through the positioning column 81 provided in the hole on the first flange 3. When the holes are aligned, the bolt 5 is screwed into the hole, and the second fixing ring 82 is destroyed by external force, so that the positioning column 81 falls off, and the connection between the first flange 3 and the second flange 4 can be accurately aligned, thereby ensuring the accuracy and reliability of the assembly, so that the valve body 1 and the oil pipe 2 can be fixedly connected, and the first fixing ring 71 on the first flange 3 and the second flange 4 places the first rubber pad 73 on the second flange 4. 3 is squeezed, because the top diameter of the first rubber pad 73 is larger than the bottom diameter, when the first rubber pad 73 is squeezed by the first fixing ring 71, the first rubber pad 73 will fill the groove 72 opened on the first fixing ring 71, so as to achieve a better sealing effect, and the second rubber pad 75 fixed on the rubber support ring 74 is in close contact with the inner wall of the valve body 1 and the oil pipe 2. Since one side of the second rubber pad 75 is arc-shaped, when the valve body 1 and the oil pipe 2 are fixed, the rubber support ring 74 will not be lifted up on both sides due to squeezing, so as to prevent the second rubber pad 75 from not fitting with the inner wall of the valve body 1 and the oil pipe 2, so as to ensure that the connection between the valve body 1 and the oil pipe 2 is well sealed, thereby preventing liquid leakage.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A sealing structure of a direct-connected oil pipe nipple combined valve with good sealing effect, characterized in that: The invention comprises a valve body (1), an oil pipe (2) is arranged on the valve body (1), a first flange (3) is fixed on the valve body (1), a second flange (4) is fixed on the oil pipe (2), bolts (5) are threadedly connected to the first flange (3) and the second flange (4), nuts (6) are threadedly connected to the bolts (5), and a sealing assembly (7) is arranged between the valve body (1) and the oil pipe (2); The sealing assembly (7) comprises a first fixing ring (71), the first fixing ring (71) is provided with a groove (72), a first rubber pad (73) is arranged in the groove (72), a rubber support ring (74) is fixed on the first rubber pad (73), and a second rubber pad (75) is fixed on the rubber support ring (74).

2. The sealing structure of a direct-connected oil pipe nipple combined valve with good sealing effect according to claim 1, characterized in that: The first fixing ring (71) is fixed on the first flange (3) and the second flange (4) respectively, and the second rubber pad (75) is arranged in the oil pipe (2) and the first flange (3).

3. The sealing structure of a direct-connected oil pipe nipple combined valve with good sealing effect according to claim 1, characterized in that: The top diameter of the first rubber pad (73) is larger than the bottom diameter.

4. The sealing structure of a direct-connected oil pipe nipple combined valve with good sealing effect according to claim 1, characterized in that: One side of the second rubber pad (75) is arc-shaped.

5. The sealing structure of a direct-connected oil pipe nipple combined valve with good sealing effect according to claim 1, characterized in that: A positioning assembly (8) is provided on the first flange (3), and the positioning assembly (8) comprises a positioning column (81). A second fixing ring (82) is fixed on the positioning column (81), and the second fixing ring (82) is fixed in a hole of the first flange (3).

6. The sealing structure of a direct-connected oil pipe nipple combined valve with good sealing effect according to claim 5, characterized in that: The positioning column (81) is arranged in the hole of the first flange (3).

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