Thermal recovery expansion valve with high sealing performance

Abstract

The utility model discloses a thermal recovery expansion valve with high sealing performance, which belongs to the technical field of valve bodies and comprises a valve body, a valve seat arranged at the top of the valve body and a valve rod arranged in the middle of the valve seat, and a cooling component is arranged on the outer side of the valve rod. A cylinder is installed in the middle of the valve seat, and the valve rod is movably arranged on the inner side of the cylinder. The cooling assembly comprises a first supporting body and a second supporting body which are oppositely arranged on the outer side of the cylinder body, and a first spiral pipe and a second spiral pipe which are arranged on the inner sides of the first supporting body and the second supporting body, and the first spiral pipe is communicated with the second spiral pipe; the first supporting body and the second supporting body are the same in structure. The first supporting body comprises an upper half ring arranged on the outer side of the cylinder body, a lower half ring arranged at the bottom of the upper half ring and a connecting plate arranged between the lower half ring and the upper half ring; a connecting unit is arranged between the first supporting body and the second supporting body. By arranging the cooling assembly, impurities in the first spiral pipe and the second spiral pipe can be conveniently cleaned.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve body technical field especially is related to a high sealing property thermal recovery expansion valve. BACKGROUND

[0002] At present, the known thermal recovery gate valve adopts the valve cover of T-shaped structure, the valve rod packing is buried in the valve cover inside and the valve rod packing is close to the lower gate plate chamber, the valve rod packing will contact the high temperature well fluid when the valve is used for well mouth thermal recovery operation, the valve rod packing plays a rotating dynamic sealing role, for the valve sealing element, it is impossible to be high temperature resistant and high pressure resistant, therefore the valve rod packing will lose the sealing function under the action of high temperature and high pressure.

[0003] Through the retrieval, it is found that the high sealing property thermal recovery expansion valve disclosed in Chinese patent publication No. CN209164748U includes a valve cover, a flange is fixedly arranged below the valve cover, threaded holes are formed on the two sides of the flange, bolts are arranged in the threaded holes, nuts are fixedly screwed on one end of the bolts, a spiral cooling groove is arranged on the outer surface of the valve cover, a sealing cavity is arranged above the valve cover, sealing grease is filled in the sealing cavity, a graphite ring is arranged on the lower side of the sealing grease, a sealing ring is arranged on the upper side of the sealing grease, a packing gland is arranged above the sealing ring, a grease injection connector is arranged on one side of the sealing cavity, a communication pipe is arranged on the surface of the valve cover, and one end of the communication pipe is communicated with the spiral cooling groove. The total length of the cooling groove is improved without the need of larger arrangement space, and the cooling is more efficient.

[0004] The above scheme has the advantages of improving the cooling effect, but the spiral cooling groove is prone to accumulate a large amount of impurities in the groove over a long period of time, which will affect the cooling effect, and it is inconvenient to disassemble the spiral cooling groove for cleaning the impurities.

[0005] Therefore, it is urgent to provide a high sealing property thermal recovery expansion valve to solve the above problems. UTILITY MODEL CONTENT

[0006] The technical problem to be solved by the utility model is to overcome the defects of the prior art that the spiral cooling groove is prone to accumulate a large amount of impurities in the groove over a long period of time, which will affect the cooling effect, and it is inconvenient to disassemble the spiral cooling groove for cleaning the impurities, and to provide a high sealing property thermal recovery expansion valve.

[0007] To solve the above technical problems, one technical scheme of the utility model is to provide a high sealing property thermal recovery expansion valve, which comprises a valve body, a valve seat arranged on the top of the valve body, and a valve rod arranged in the middle of the valve seat, wherein the outer side of the valve rod is provided with a cooling assembly.

[0008] The middle part of the valve seat is provided with a cylinder body, and the valve rod is movably arranged in the inside of the cylinder body;

[0009] The cooling assembly comprises a first support body and a second support body arranged oppositely on the outside of the cylinder body, a first spiral pipe and a second spiral pipe arranged in the inside of the first support body and the second support body, and the first spiral pipe and the second spiral pipe are communicated with each other.

[0010] The first support body and the second support body are of the same structure.

[0011] The first support body comprises an upper half ring arranged on the outside of the cylinder body, a lower half ring arranged at the bottom of the upper half ring, and a connecting plate arranged between the lower half ring and the upper half ring.

[0012] The first support body and the second support body are provided with a connecting unit.

[0013] The utility model further sets up: two ends of the valve body are provided with liquid inlet pipe and liquid outlet pipe respectively, and the end of liquid inlet pipe and liquid outlet pipe is provided with flange.

[0014] The utility model further sets up: the middle part of valve seat is provided with filler groove, the inside of filler groove is provided with filler, and the side of filler groove is provided with injection assembly.

[0015] The utility model further sets up: injection assembly includes injection pipe of installing in the lateral wall of filler groove, push rod of setting up in injection pipe, and the top of injection pipe is provided with feed pipe.

[0016] The utility model further sets up: the upper and lower sides of filler groove are movably provided with limiting ring, and the outside of two limiting rings is provided with extrusion ring.

[0017] The utility model further sets up: the number of connecting unit has two groups, and two connecting units are oppositely arranged between the first support body and the second support body.

[0018] The utility model further sets up: the connecting unit comprises the first movable groove of setting up the outer surface of the connecting plate of the first support body, one end of extruding piece of installing in the lateral wall of first movable groove, one end of the positioning block of installing in the other end of extruding piece, the outer surface of the connecting plate of second support body is provided with second movable groove, and the lateral wall of second movable groove is provided with the positioning groove of the size of the other end of positioning block.

[0019] The utility model has the advantages of the following:

[0020] The utility model discloses a cooling assembly, when needing to dismount and clean cooling assembly, cooperation promotes positioning block to make its one end and positioning groove separate, thereby release the spacing between first support body and second support body, and the first support body and second support body are pulled to the outside, and it can be dismounted from the cylinder, and it is convenient to clean, when needing to install it after cleaning, first, the first support body and second support body are placed on the outside of cylinder relatively, and then cooperation extrusion piece's elastic extrusion effect promotes positioning block to make its one end and positioning groove engage, thereby make first support body and second support body fixed connection, and it is convenient to cooling assembly and dismount, so as to clean the impurity in the first spiral pipe and second spiral pipe, guarantee cooling effect. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the three-dimensional structure diagram of the utility model;

[0022] Figure 2 It is the sectional three-dimensional structure diagram of the utility model;

[0023] Figure 3 It is Figure 2 It is the partial close -up of A in middle;

[0024] Figure 4 It is the three-dimensional structure diagram of cooling assembly of the utility model;

[0025] Figure 5 It is Figure 4 It is the partial close -up of B in middle.

[0026] In the drawing: 1, valve body;11, inlet pipe;12, outlet pipe;2, valve seat;21, packing groove;22, packing;23, limit ring;24, extrusion ring;3, valve stem;4, cooling assembly;41, first support body;411, upper half ring;412, lower half ring;413, connecting plate;42, second support body;43, first spiral pipe;44, second spiral pipe;45, connecting unit;451, extrusion piece;452, positioning block;453, positioning groove;5, cylinder;6, injection assembly;61, injection pipe;62, push rod;63, feed pipe. DETAILED DESCRIPTION

[0027] The preferred embodiments of the utility model are described in detail below in combination with the drawings, so that the advantages and characteristics of the utility model can be more easily understood by the person skilled in the art, and the protection scope of the utility model is defined more clearly and explicitly.

[0028] Please refer to Figure 1 - Figure 5The utility model provides a high sealing heat extraction expansion valve, including valve body 1, the valve seat 2 of setting in the top of valve body 1, the valve stem 3 of setting in the middle part of valve seat 2, the outside of valve stem 3 is provided with cooling assembly 4, and cooling assembly 4 is used to cool the high temperature steam of liquid in the inside of valve body 1, avoids high temperature steam to enter the inside of valve seat 2, causes the reduction of sealing property,

[0029] The middle part of the valve seat 2 is provided with a cylinder 5, and the valve stem 3 is movably arranged in the inside of the cylinder 5.

[0030] The cooling assembly 4 comprises a first support body 41 and a second support body 42 arranged oppositely on the outside of the cylinder 5, a first spiral pipe 43 and a second spiral pipe 44 arranged in the inside of the first support body 41 and the second support body 42, the first spiral pipe 43 is communicated with the second spiral pipe 44, and preferably the bottom of the first spiral pipe 43 and the bottom of the second spiral pipe 44 are communicated with the inside of the cylinder 5.

[0031] The first support body 41 and the second support body 42 are the same in structure.

[0032] The first support body 41 comprises an upper half ring 411 arranged on the outside of the cylinder 5, a lower half ring 412 arranged at the bottom of the upper half ring 411 and a connecting plate 413 arranged between the lower half ring 412 and the upper half ring 411.

[0033] A connecting unit 45 is arranged between the first support body 41 and the second support body 42.

[0034] The two ends of the valve body 1 are respectively provided with an inlet pipe 11 and an outlet pipe 12, and the end of the inlet pipe 11 and the outlet pipe 12 is provided with a flange.

[0035] Preferably, a side wall of the valve seat 2 is provided with an inspection hole, and a maintenance door is arranged on the inspection hole through bolts.

[0036] The middle part of the valve seat 2 is provided with a packing groove 21, the inside of the packing groove 21 is provided with a packing 22, and the side of the packing groove 21 is provided with a filling assembly 6.

[0037] The filling assembly 6 comprises a filling pipe 61 arranged on the side wall of the packing groove 21 and a push rod 62 arranged in the inside of the filling pipe 61, the top of the filling pipe 61 is provided with a feeding pipe 63, and preferably a sealing plug is arranged on the feeding pipe 63.

[0038] The upper and lower sides of the packing groove 21 are movably provided with limiting rings 23, and the outside of the two limiting rings 23 is provided with extrusion rings 24, preferably the extrusion rings 24 are made of elastic rubber material, and the limiting rings 23 always extrude the packing 22 in the inside of the packing groove 21 through the cooperation of the extrusion rings 24, so as to ensure that the packing in the inside of the packing groove 21 is filled.

[0039] The connecting units 45 are arranged in two groups, and the two groups of connecting units 45 are oppositely arranged between the first support body 41 and the second support body 42.

[0040] The connecting unit 45 comprises a first movable groove arranged on the outer surface of the connecting plate 413 of the first support body 41, one end of an extrusion piece 451 arranged on the side wall of the first movable groove, one end of a positioning block 452 arranged on the other end of the extrusion piece 451, and a second movable groove arranged on the outer surface of the connecting plate 413 of the second support body 42.

[0041] When the cooling assembly 4 needs to be disassembled and cleaned, the maintenance door is first disassembled by using a tool, then the positioning block 452 is pushed to separate one end thereof from the positioning groove 453, so that the limiting between the first support body 41 and the second support body 42 is released, and the first support body 41 and the second support body 42 are pulled outward to be disassembled from the cylinder body 5, so that the first support body 41 and the second support body 42 are conveniently cleaned.

[0042] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.

Claims

1. A high-sealing thermal expansion valve, comprising a valve body (1), a valve seat (2) arranged at the top of the valve body (1), and a valve stem (3) arranged in the middle of the valve seat (2), characterized in that: The outer side of the valve rod (3) is provided with a cooling assembly (4); The middle part of the valve seat (2) is provided with a cylinder (5), and the valve rod (3) is movably arranged in the inner side of the cylinder (5); The cooling assembly (4) comprises a first support body (41) and a second support body (42) oppositely arranged on the outer side of the cylinder (5), a first spiral pipe (43) and a second spiral pipe (44) arranged in the inner sides of the first support body (41) and the second support body (42), and the first spiral pipe (43) and the second spiral pipe (44) are communicated. The first support body (41) and the second support body (42) are the same in structure. The first support body (41) comprises an upper half ring (411) arranged on the outer side of the cylinder (5), a lower half ring (412) arranged at the bottom of the upper half ring (411), and a connecting plate (413) arranged between the lower half ring (412) and the upper half ring (411). A connecting unit (45) is arranged between the first support body (41) and the second support body (42).

2. The high-seal thermal expansion valve according to claim 1, wherein: The valve body (1) is provided with a liquid inlet pipe (11) and a liquid outlet pipe (12) at both ends, respectively, and the end of the liquid inlet pipe (11) and the liquid outlet pipe (12) is provided with a flange.

3. A high sealing thermal expansion valve according to claim 2, characterized in that: The middle part of the valve seat (2) is provided with a packing groove (21), the inside of the packing groove (21) is provided with a packing (22), and the side of the packing groove (21) is provided with a filling assembly (6).

4. A high sealing thermal expansion valve according to claim 3, characterized in that: The filling assembly (6) comprises a filling pipe (61) arranged on the side wall of the packing groove (21), a push rod (62) arranged in the filling pipe (61), and a feeding pipe (63) arranged at the top of the filling pipe (61).

5. A high-seal thermal expansion valve according to claim 4, wherein: The upper and lower sides of the packing groove (21) are movably provided with a limiting ring (23), and the outer side of the two limiting rings (23) is provided with a pressing ring (24).

6. A high-seal thermal expansion valve according to claim 5, wherein: The number of the connecting unit (45) is two groups, and the two groups of the connecting unit (45) are oppositely arranged between the first support body (41) and the second support body (42).

7. A high sealing thermal expansion valve according to claim 6, characterized in that: The connecting unit (45) comprises a first movable groove arranged on the outer surface of the connecting plate (413) of the first support body (41), one end of a pressing piece (451) arranged on the side wall of the first movable groove, one end of a positioning block (452) arranged on the other end of the pressing piece (451), a second movable groove is formed on the outer surface of the connecting plate (413) of the second support body (42), and a positioning groove (453) with a size matched with the other end of the positioning block (452) is formed on the side wall of the second movable groove.

Images