Petroleum industry gate valve with built-in cooling channel

Abstract

The utility model discloses a petroleum industry gate valve with a built-in cooling channel, which relates to the field of petroleum industry gate valves and is characterized by comprising a valve body, a valve rod arranged in the middle of the valve body and a valve plate arranged at the bottom of the valve rod. The water inlet pipe and the water outlet pipe are arranged on the two sides of the outer side wall of the valve body and connected with a pipeline on an external circulating cooling pipeline through the water inlet pipe and the water outlet pipe, so that a circulating cooling channel is formed, and the effect is that heat generated by high-pressure fluid friction, chemical corrosion or environmental radiation of the valve body is continuously taken away; the temperature of the valve body material is always lower than a critical value, and thermal deformation of a sealing surface, valve plate blocking and thermal expansion failure of the valve rod are effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the petroleum industry gate valve field more specifically, it relates to a built-in cooling channel's petroleum industry gate valve. BACKGROUND

[0002] The petroleum industry gate valve is the key equipment of controlling fluid on-off in the link such as oil exploitation, transportation, refining, usually adopts the flat plate or wedge-shaped gate structure, has high sealing, high pressure resistance (up to 42MPa above) and high temperature resistance (maximum about 650 DEG C) characteristics, the valve body and sealing surface adopt corrosion -resistant material such as carbon steel, stainless steel or alloy steel, and supplement hard alloy surfacing or elastic sealing design, can effectively respond to complex medium such as sulfur, sand containing, its operation mode covers manual, electric, pneumatic or hydraulic, meets API6D, ASMEB16.34 etc. International standard, is widely used in oil and gas pipeline, storage tank, wellhead device and refining device, ensures the safety and reliability of fluid control.

[0003] In the petroleum industry, the traditional gate valve is in high temperature (300-500 DEG C) for a long time, and the valve body and the gate plate are unevenly heated due to the difference in material thermal expansion coefficient (such as the linear expansion coefficient of cast steel valve body is about 12*10 6 / ℃, the stainless steel gate plate is about 17*10 6 / ℃), and the local temperature gradient is more than 200℃ / m, which produces thermal stress concentration (more than 200MPa), far exceeding the yield strength of the material (such as WCB steel about 250MPa), causing the deformation of valve flange, the warping of gate plate and the misplacement of sealing surface; at the same time, high temperature makes the sealing material (such as graphite, rubber) accelerate aging, and after the elastic failure, the deformation gap cannot be compensated, and the high pressure medium erosion aggravates the sealing surface wear, eventually leading to the leakage passage between the gate plate and the valve seat, losing the cutting function, seriously threatening the safety of pipeline.

[0004] Therefore, in order to solve the above technical problems, the present application provides a built-in cooling channel's petroleum industry gate valve. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the utility model aims at providing a built-in cooling channel's petroleum industry gate valve.

[0006] To achieve the above object, the utility model provides the following technical scheme: a built-in cooling channel's petroleum industry gate valve, including the valve body, the valve rod arranged in the middle part of the valve body, and the valve plate arranged at the bottom of the valve rod, the inside of the valve body is provided with annular cooling cavity, the water inlet pipe and the water outlet pipe are arranged on both sides of the outer side wall of the valve body, and the water inlet pipe and the water outlet pipe are connected with the pipeline on the external circulating cooling pipeline, so as to form a circulating cooling channel.

[0007] Preferably, the valve body, the valve rod arranged at the middle of the valve body and the valve plate arranged at the bottom of the valve rod are characterized in that: the inside of the valve body is provided with an annular cooling cavity, the water inlet pipe and the water outlet pipe are arranged at the two sides of the outer wall of the valve body, and the water inlet pipe and the water outlet pipe are connected with the pipelines on the circulating cooling pipeline, so that a circulating cooling channel is formed.

[0008] Preferably, the detachable connection between the water inlet pipe and the water outlet pipe and the pipelines on the circulating cooling pipeline is realized through a quick release structure.

[0009] Preferably, the outer wall of the water inlet pipe and the water outlet pipe is fixedly connected with a connecting plate A, the inside of the connecting plate A is provided with a through groove, the pipelines on the annular cooling pipeline are provided with two groups of connecting pipes which are respectively inserted into the water inlet pipe and the water outlet pipe, the outer wall of the connecting pipe is fixedly connected with a connecting plate B, and the bottom end of the connecting plate B is provided with an elastic component which drives the limiting block to move.

[0010] Preferably, the elastic component comprises a groove seat which is fixed at the bottom end of the connecting plate B and can pass through the through groove, and the inside of the groove seat is connected with the limiting block through an elastic air cushion.

[0011] Preferably, a telescopic rod is arranged between the inner surface of the groove seat and the back surface of the limiting block.

[0012] Preferably, a plurality of circular grooves are arranged at the top of the water inlet pipe and the water outlet pipe, a plurality of annular plates which can be respectively inserted into the circular grooves are integrally formed at the bottom of the connecting pipe, and the inner surface of the circular groove is coated with a layer of rubber.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1、The gate valve of the utility model realizes dynamic temperature control through the cooperation of the annular cooling cavity in the valve body and the external circulating cooling pipeline: when the valve is in high-temperature working condition, the cooling medium is pumped into the annular cooling cavity from the water inlet pipe, absorbs the heat conducted by the inner wall of the valve body along the spiral or circuitous flow channel of the cavity, and then the heated medium is discharged to the external heat exchanger to reduce the temperature, forming a closed loop circulation; this process continuously removes the heat generated by the high-pressure fluid friction, chemical corrosion or environmental radiation of the valve body, ensures that the temperature of the valve body material is always below the critical value, effectively prevents the thermal deformation of the sealing surface, the jamming of the valve plate and the thermal expansion failure of the valve rod, adjusts the flow and temperature of the cooling medium, adapts to the heat dissipation demand under different working conditions, significantly improves the sealing stability and service life of the valve under extreme environment, and solves the problem that high temperature has certain influence on the gate valve in the background technology.

[0015] 2、The utility model not only realizes the synchronous cooling of valve body and valve plate, but also can effectively inhibit the deformation of sealing surface of valve plate caused by high temperature creep through the direct contact heat exchange of cooling liquid in the valve plate.

[0016] 3、The utility model discloses quick -release structure is realized detachable connection between water inlet pipe and water outlet pipe and the pipeline on circulating cooling pipeline, thereby realizes the quick connection of the internal cooling channel of petroleum industry gate valve and external circulating cooling pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the application, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute improper limitation to the utility model. In the drawings:

[0018] Figure 1 It is the whole structure schematic diagram of the utility model;

[0019] Figure 2 It is the A partial structure enlarged view of the utility model; Figure 1

[0020] Figure 3 It is another angle specific structure schematic diagram of the utility model; Figure 1

[0021] Figure 4 It is the B partial structure enlarged view of the utility model; Figure 3

[0022] Figure 5 It is the valve rod connecting structure schematic diagram of the utility model;

[0023] Figure 6 It is the recess seat internal specific structure schematic diagram (after removing the restriction block).

[0024] In the drawing: 1, valve body;2, valve rod;3, valve plate;4, hose;5, water inlet pipe;6, water outlet pipe;7, connecting plate A;8, through groove;9, connecting plate B;10, restriction block;11, elastic component;1101, recess seat;1102, elastic air cushion;1103, telescopic rod;12, circular recess;13, annular plate;14, connecting pipe. DETAILED DESCRIPTION

[0025] As Figures 1-6 ​​​The utility model provides a kind of built-in cooling channel's petroleum industry gate valve, including valve body 1, the valve stem 2 being arranged in the middle part of valve body 1, and the valve plate 3 being arranged in the bottom of valve stem 2, the inside of valve body 1 is equipped with annular cooling cavity, its inlet pipe 5 and outlet pipe 6 are arranged in the two sides of the outer lateral wall of valve body 1, are connected with the pipeline on the outside circulating cooling pipeline by inlet pipe 5 and outlet pipe 6, to form circulating cooling channel.

[0026] The built-in cooling channel's petroleum industry gate valve is cooperated with the outside circulating cooling pipeline by the annular cooling cavity in the inside of valve body 1, realizes dynamic temperature control: when valve is in high temperature working condition (such as transporting sulfur-containing crude oil or high temperature steam), cooling medium (such as water or special heat conducting oil) is pumped into annular cooling cavity from inlet pipe 5, along the spiral or circuitous design flow passage of cavity body sufficiently absorbs the heat conducted by the inner wall of valve body 1, then the medium after temperature rise is discharged to outside heat exchanger to be cooled down, forms closed loop circulation;This process continuously takes away the heat generated by high-pressure fluid friction, chemical corrosion or environmental radiation of valve body 1, ensures that the temperature of valve body 1 material is always below critical value (such as carbon steel ≤425 DEG C), effectively prevents sealing surface thermal deformation, valve plate 3 jam and valve stem 2 thermal expansion failure, simultaneously, by adjusting the flow and temperature of cooling medium, the heat dissipation demand under different working conditions can be adapted, the sealing stability and service life of valve under extreme environment are significantly improved.

[0027] Further, the annular cooling cavity of valve body 1 is divided into two groups and arranged on the two sides of valve body 1 relative to valve plate 3, the inside of valve plate 3 is hollow, thereby forming a cavity for accommodating cooling liquid, and the two groups of annular cooling cavities on valve body 1 are connected to the cavity of valve plate 3 through hoses 4.

[0028] Specifically, the two groups of annular cooling cavities inside valve body 1 are symmetrically distributed on the two sides of valve plate 3, under the driving of external circulating pump, cooling medium is injected into one of the annular cooling cavities from inlet pipe 5, forms turbulent flow guided by the spiral flow guide inside the cavity to strengthen heat exchange efficiency, then flows into the hollow cooling cavity inside valve plate 3 through the hose 4 made of high-temperature-resistant fluorine rubber material, the cooling liquid flows along the path designed by the axial baffle in the cavity of valve plate 3, sufficiently absorbs the heat generated by high-pressure fluid shear and sealing surface friction of valve plate 3, then is guided into the other annular cooling cavity through the other hose 4 for further cooling, and finally returns to the external cooling tower from outlet pipe 6 to complete the circulation;This design not only realizes the synchronous cooling of valve body 1 and valve plate 3 (the overall temperature can be controlled below 200 DEG C), but also more effectively inhibits the deformation of sealing surface of valve plate 3 caused by high temperature creep through the direct contact heat exchange of cooling liquid inside valve plate 3.

[0029] And, the water inlet pipe 5 and the water outlet pipe 6 are detachably connected with the pipeline on the circulating cooling pipeline through quick release structure, so as to realize the quick connection of the internal cooling channel of the petroleum industry gate valve and the external circulating cooling pipeline. The specific connection structure is as follows: the outer side wall of the water inlet pipe 5 and the water outlet pipe 6 is fixedly connected with the connecting plate A 7, and the connecting plate A 7 is provided with a through groove 8 in the inside; the pipeline on the circulating cooling pipeline is provided with two groups of connecting pipes 14 inserted into the water inlet pipe 5 and the water outlet pipe 6 respectively; the outer side wall of the connecting pipe 14 is fixedly connected with the connecting plate B 9, and the bottom end of the connecting plate B 9 is provided with an elastic component 11 for moving the limiting block 10; the elastic component 11 comprises a recessed groove seat 1101 fixed at the bottom end of the connecting plate B 9 and capable of penetrating through the through groove 8, and the recessed groove seat 1101 is connected with the limiting block 10 through an elastic air cushion 1102 in the inside.

[0030] That is, the limiting block 10 is pressed into the recessed groove seat 1101, and then the recessed groove seat 1101 on the connecting pipe 14 is inserted into the through groove 8 on the water inlet pipe 5 or the water outlet pipe 6. After penetration, the connecting pipe 14 is sleeved on the water inlet pipe 5 or the water outlet pipe 6, the connecting plate A 7 and the connecting plate B 9 are tightly attached to each other, and the limiting block 10 also completely penetrates through the through groove 8. Under the condition that there is no external force pressing, the elastic air cushion 1102 will reset the limiting block 10 by using its elasticity, and the limiting block 10 will be stretched out of the recessed groove seat 1101 to resist the bottom end of the connecting plate B 9, so as to fix the connecting plate A 7 and the connecting plate B 9. Thus, the connection between the connecting pipe 14 and the water inlet pipe 5 or the water outlet pipe 6 is completed. Conversely, the limiting block 10 is pressed into the recessed groove seat 1101 again, and the recessed groove seat 1101 is pulled out of the through groove 8, so as to realize the disconnection between the connecting pipe 14 and the water outlet pipe 6 or the water inlet pipe 5. The disconnection is relatively convenient.

[0031] Moreover, the elastic component 11 comprises the recessed groove seat 1101 fixed at the bottom end of the connecting plate B 9 and capable of penetrating through the through groove 8, and the recessed groove seat 1101 is connected with the limiting block 10 through the elastic air cushion 1102 in the inside. The telescopic rod 1103 can maintain the linear movement of the limiting block relative to the recessed groove seat 1101, so as to avoid the inclination of the limiting block and affect the connection effect between the connecting pipe 14 and the water inlet pipe 5 or the water outlet pipe 6.

[0032] Moreover, the top of the water inlet pipe 5 and the water outlet pipe 6 is provided with a plurality of circular grooves 12, the bottom of the connecting pipe 14 is integrally formed with a plurality of annular plates 13 which can be inserted into the circular grooves 12 respectively, the inner surface of the circular grooves 12 is coated with a layer of rubber, that is, when the connecting pipe 14 is connected with the water inlet pipe 5 or the water outlet pipe 6 (the connecting pipe 14 is sleeved on the water inlet pipe 5 or the water outlet pipe 6), at this time, the plurality of annular plates 13 are inserted into the plurality of circular grooves 12, the rubber layer (usually high-temperature-resistant fluorine rubber) on the inner wall of the circular grooves 12 is elastically deformed under the radial extrusion of the annular plates 13, and the gap between the circular grooves 12 and the annular plates 13 is filled, so that a multi-layer sealing structure is formed, so as to fully ensure the sealing performance of the connection between the water inlet pipe 5 and the water outlet pipe 6.

[0033] The above is only a preferred embodiment of the present application, and does not limit the present application in any form; any person skilled in the art can easily implement the present application according to the above description and the drawings; however, any equivalent changes, modifications and evolutions made by those skilled in the art within the scope of the technical scheme of the present application, using the above disclosed technical content, are equivalent embodiments of the present application; at the same time, any equivalent changes, modifications and evolutions made according to the essential technology of the present application are still within the protection scope of the technical scheme of the present application.

Claims

1. A gate valve for the petroleum industry with a built-in cooling channel, characterized in that: The valve body (1) includes a valve stem (2) located in the middle of the valve body (1) and a valve plate (3) located at the bottom of the valve stem (2). The valve body (1) is characterized in that an annular cooling chamber is provided inside the valve body (1), and its inlet pipe (5) and outlet pipe (6) are located on both sides of the outer wall of the valve body (1). The inlet pipe (5) and outlet pipe (6) are connected to the pipes on the external circulating cooling pipeline to form a circulating cooling channel.

2. The petroleum industry gate valve with a built-in cooling channel according to claim 1, characterized in that: The annular cooling chamber of the valve body (1) is divided into two groups and is respectively set on both sides of the valve body (1) relative to the valve plate (3). The interior of the valve plate (3) is hollow, thus forming a cavity for the coolant to be contained. The two annular cooling chambers on the valve body (1) are connected to the cavity of the valve plate (3) through a hose (4).

3. A gate valve for the petroleum industry with a built-in cooling channel according to claim 1, characterized in that: The inlet pipe (5) and outlet pipe (6) are detachably connected to the pipes on the circulating cooling pipeline through a quick-release structure.

4. A gate valve for the petroleum industry with a built-in cooling channel according to claim 3, characterized in that: The outer walls of the water inlet pipe (5) and the water outlet pipe (6) are fixedly connected to a connecting plate A (7), and the connecting plate A (7) has a through groove (8) inside. The pipes on the ring cooling pipe are provided with two sets of connecting pipes (14) that are respectively inserted into the water inlet pipe (5) and the water outlet pipe (6). The outer walls of the connecting pipes (14) are fixedly connected to a connecting plate B (9), and the bottom end of the connecting plate B (9) is equipped with an elastic component (11) that pushes the limiting block (10) to move.

5. A gate valve for the petroleum industry with a built-in cooling channel according to claim 4, characterized in that: The elastic component (11) includes a groove seat (1101) fixed to the bottom of the connecting plate B (9) and capable of passing through the through groove (8). The interior of the groove seat (1101) is connected to the limiting block (10) through an elastic air cushion (1102).

6. A gate valve for the petroleum industry with a built-in cooling channel according to claim 5, characterized in that: A telescopic rod (1103) is installed between the inner surface of the groove seat (1101) and the back of the limiting block (10).

7. A gate valve for the petroleum industry with a built-in cooling channel according to claim 4, characterized in that: The top of the water inlet pipe (5) and the water outlet pipe (6) are provided with multiple circular grooves (12), and the bottom of the connecting pipe (14) is integrally formed with multiple annular plates (13) that can be inserted into each of the circular grooves (12). The inner surface of the circular grooves (12) is covered with a layer of rubber.

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