Auxiliary opening and closing device for drainage control valve

Abstract

The invention discloses an auxiliary opening and closing device for a drainage control valve and relates to the technical field of valve wrenches. The auxiliary opening and closing device comprises a supporting unit, a torque amplifying unit and a connecting unit. The torque amplification unit is arranged on the supporting unit in a sliding manner and is detachably connected and clamped with the supporting unit; the connecting unit comprises a connecting block arranged at the output end of the torque amplifying unit, a supporting assembly arranged on the connecting block, three clamping columns evenly arranged on the supporting assembly in a sliding mode, and a driving assembly arranged on the supporting assembly and used for driving the clamping columns to move. The auxiliary opening and closing device for the drain control valve can be operated by a single person, and enough torque can be obtained to drive the valve to be closed.

Description

Technical Field

[0001] The invention relates to the technical field of valve wrenches, and in particular to a hydrophobic regulating valve auxiliary opening and closing device. Background Art

[0002] In thermal power plants, the extraction steam heat recovery system is an important energy recovery system that can significantly improve the power generation efficiency of the unit and reduce the coal consumption per unit of electricity. The high and low pressure heaters at each level are devices for heat exchange in the extraction steam heat recovery system. The stable operation of the heater will directly determine the stable operation of the extraction steam heat recovery system, and maintaining a certain height of the heater water level is an important condition to ensure the stable operation of the heater. The opening and closing of the heater drain valve affects the heater water level. If the heater water level is too low, part of the non-condensable steam will enter the next stage heater through the drain pipe, which will squeeze the steam intake of the next stage heater and increase the cold source loss. If the water level is low for a long time, the drain is in a steam-water two-phase flow state, which will cause scouring and leakage of the heater tube bundle and affect safety; if the water level of the heater is too high, the heat transfer surface will be submerged by water, and the heat transfer efficiency will decrease. In severe cases, it may even cause water inflow to the turbine, causing water shock, which seriously affects the safe operation of the unit. Therefore, in the daily maintenance work of the power plant, a special tool that can quickly open and close the heater drain valve is needed.

[0003] Generally, when opening and closing the manual high-pressure drain regulating valve, an F-type wrench is used for operation. This method has the following disadvantages:

[0004] (1) The force-bearing point of the valve handwheel is small, and it is not easy to find a suitable position for operation when using an F-type wrench. Generally, multiple positioning is required, which is inefficient;

[0005] (2) When using an F-type wrench to open and close the valve, the wrench and the handwheel are prone to slipping, which poses a safety hazard to the operator and is prone to damage to the valve stem and other components;

[0006] (3) Multiple people are required to operate the valve. One person using an F-type wrench often cannot reach the torque required to open and close the valve. Multiple people are required to use F-type wrenches at different positions at the same time to operate the valve, which greatly wastes manpower and material resources. Summary of the invention

[0007] In view of the problems existing in the above-mentioned existing hydrophobic regulating valve auxiliary opening and closing device, the present invention is proposed.

[0008] Therefore, the present invention provides a hydrophobic valve auxiliary opening and closing device, the purpose of which is to solve the technical problems of difficult positioning and requiring cooperation of multiple people to achieve torque.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising:

[0010] Support unit;

[0011] a torque amplifying unit, which is slidably disposed on the supporting unit and is detachably connected and clamped to the supporting unit; and

[0012] The connecting unit includes a connecting block arranged at the output end of the torque amplifying unit, a supporting assembly arranged on the connecting block, three clamping columns uniformly slidably arranged on the supporting assembly, and a driving assembly arranged on the supporting assembly for driving the clamping columns to move.

[0013] As a preferred solution of the hydrophobic regulating valve auxiliary opening and closing device described in the present invention, the support unit includes a connecting sleeve connected to the torque amplification unit, two support arms respectively arranged at both ends of the connecting sleeve, and a clamping sleeve arranged on the support arm.

[0014] As a preferred solution of the hydrophobic regulating valve auxiliary opening and closing device described in the present invention, the torque amplification unit includes an amplifier body slidably connected and clamped with the connecting sleeve, an input shaft arranged at the upper part of the amplifier body, and an output shaft arranged at the lower part of the amplifier body and connected to the connecting block.

[0015] As a preferred solution of the hydrophobic regulating valve auxiliary opening and closing device described in the present invention, wherein: a first engaging tooth is provided on the connecting sleeve; a second engaging tooth and a contact step are provided on the amplifier body; the second engaging tooth is engaged with the first engaging tooth; and the connecting sleeve is in contact with the contact step.

[0016] As a preferred solution of the hydrophobic regulating valve auxiliary opening and closing device described in the present invention, the supporting assembly includes a supporting sleeve arranged on the connecting block, three guide arms arranged in a circular shape and evenly arranged on the outer peripheral side of the supporting sleeve, and three sliding arms respectively slidably arranged in the three guide arms; the clamping column is arranged on the sliding arm.

[0017] As a preferred solution of the hydrophobic regulating valve auxiliary opening and closing device of the present invention, wherein: the driving components are arranged in three corresponding to the sliding arms; the driving component includes a screw rod rotatably arranged on the support sleeve and located in the guide arm and threadedly connected to the sliding arm, a gear arranged on the screw rod, and an annular gear disk rotatably arranged on the support sleeve and threadedly connected to the three gears; a clamping component connected to the annular gear disk is arranged on the support sleeve.

[0018] As a preferred solution of the hydrophobic regulating valve auxiliary opening and closing device described in the present invention, the clamping assembly includes a clamping platform arranged on the annular gear disk, a plurality of bases which are all arranged on the support sleeve, and a support column which is rotatably arranged on the base and is slidably connected and clamped with the clamping platform.

[0019] As a preferred solution of the hydrophobic regulating valve auxiliary opening and closing device described in the present invention, the upper part of the clamping platform is a handle-type structure, the middle part of which is provided with a boss, and the lower part is connected to the annular gear disk; the support column is embedded between the handle-type structure and the boss.

[0020] As a preferred solution of the hydrophobic regulating valve auxiliary opening and closing device described in the present invention, wherein: the upper part of the connecting block is provided with a plug-in groove connected to the output shaft; the lower part of the connecting block is provided with a storage groove, and a positioning component slidably arranged in the storage groove.

[0021] As a preferred solution of the hydrophobic regulating valve auxiliary opening and closing device described in the present invention, the positioning assembly includes a positioning block having a guide groove and slidably arranged in the receiving groove, an elastic member arranged in the positioning block and having two ends respectively abutting against the positioning block and the connecting block, and a limiting bolt arranged on the connecting block and having one end embedded in the guide groove and clamped with the positioning block.

[0022] The beneficial effects of the present invention include: supporting and positioning by a supporting unit, clamping the connecting unit on the valve handwheel, and increasing the torque by a torque amplification unit, thereby solving the technical problems of difficult positioning and requiring cooperation of multiple persons to achieve the torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the hydrophobic regulating valve auxiliary opening and closing device of the present invention.

[0025] Figure 2 It is a schematic diagram of the partial structure of the auxiliary opening and closing device of the hydrophobic regulating valve of the present invention.

[0026] Figure 3 It is a schematic diagram of the structure of the connection unit in the auxiliary opening and closing device of the hydrophobic regulating valve of the present invention.

[0027] Figure 4It is a structural cross-sectional view of the connection unit in the auxiliary opening and closing device of the hydrophobic regulating valve of the present invention.

[0028] Figure 5 for Figure 4 A magnified schematic diagram of center A.

[0029] Figure 6 It is a structural schematic diagram of the clamping platform in the auxiliary opening and closing device of the hydrophobic regulating valve of the present invention.

[0030] Figure 7 It is a schematic diagram of the partial structure of the connection unit in the auxiliary opening and closing device of the hydrophobic regulating valve of the present invention.

[0031] Figure 8 It is a schematic cross-sectional view of the local structure of the auxiliary opening and closing device of the hydrophobic regulating valve of the present invention. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0035] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0036] Example 1, reference Figure 1-Figure 8 , which is the first embodiment of the present invention, provides a hydrophobic valve auxiliary opening and closing device, the device comprising a support unit 100, a torque amplification unit 200, and a connection unit 300;

[0037] The torque amplification unit 200 is slidably set on the support unit 100, and is detachably connected and clamped with the support unit 100; the connection unit 300 includes a connection block 304 set at the output end of the torque amplification unit 200, a support component 301 set on the connection block 304, three clamping columns 302 are evenly slidably set on the support component 301, and a driving component 303 is set on the support component 301 for driving the clamping columns 302 to move.

[0038] Furthermore, the support unit 100 includes a connecting sleeve 101 connected to the torque amplifying unit 200, two support arms 102 respectively arranged at both ends of the connecting sleeve 101, and a clamping sleeve 103 arranged on the support arm 102; the support unit 100 can make the torque amplifying unit 200 have supporting force.

[0039] Furthermore, the torque amplification unit 200 includes an amplifier body 201 slidably connected and clamped with the connecting sleeve 101 , an input shaft 202 arranged at the upper part of the amplifier body 201 , and an output shaft 203 arranged at the lower part of the amplifier body 201 and connected to the connecting block 304 .

[0040] Among them, the connecting sleeve 101 is provided with a locking tooth 101a; the amplifier body 201 is provided with a locking tooth 201a and a contact step 201b; the locking tooth 201a is locked with the locking tooth 1 101a; the connecting sleeve 101 is in contact with the contact step 201b; the locking tooth 101a is locked on the locking tooth 201a and can slide, so that the locking tooth 101a can support the amplifier body 201 and has a certain sliding space, so that it can cope with valves of different sizes, can have a certain adjustment space, and improve the fault tolerance rate.

[0041] During use, the clamping sleeve 103 is clamped on the pipeline, the connecting sleeve 101 is supported by the support arm 102, the connecting unit 300 is placed on the valve handwheel, the amplifier body 201 is inserted into the connecting sleeve 101, and the output shaft 203 is clamped on the connecting block 304, and the clamping column 302 is driven to move by the driving component 303, so that the clamping column 302 is clamped on the valve handwheel, and the torque wrench is clamped on the input shaft 202. When the torque wrench is rotated, the torque is amplified by the amplifier body 201, so that the output torque is transmitted to the connecting block 304 through the output shaft 203 to drive the connecting block 304 to rotate, and the connecting block 304 drives the supporting component 301 to rotate, and the supporting component 301 drives the clamping column 302 to move, so that the clamping column 302 pushes the valve handwheel to rotate, so that the valve handwheel can be pushed to rotate with less force, which is convenient for closing without the cooperation of multiple people.

[0042] Example 2, reference Figure 1-Figure 8, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the support assembly 301 includes a support sleeve 301a arranged on the connecting block 304, three guide arms 301b arranged in a circular shape and uniformly arranged on the outer peripheral side of the support sleeve 301a, and three sliding arms 301c arranged and slidably arranged in the three guide arms 301b respectively; the clamping column 302 is arranged on the sliding arm 301c.

[0043] Furthermore, three driving components 303 are provided corresponding to the sliding arms 301c; the driving component 303 includes a screw rod 303a rotatably provided on the support sleeve 301a, located in the guide arm 301b and threadedly connected to the sliding arm 301c, a gear 303b provided on the screw rod 303a, and an annular gear disk 303c rotatably provided on the support sleeve 301a and threadedly connected to the three gears 303b; a clamping component 305 connected to the annular gear disk 303c is provided on the support sleeve 301a; the sliding arm 301c can be driven to move by the driving component 303 to adjust the position of the clamping column 302.

[0044] During use, the annular toothed disc 303c is driven to rotate by rotating the clamping platform 305b, the annular toothed disc 303c drives the gear 303b to rotate, the gear 303b drives the screw rod 303a to rotate, and the screw rod 303a drives the sliding arm 301c to move, so that the sliding arm 301c drives the clamping column 302 to move, so that the clamping column 302 can move to the position of the inner edge of the valve handwheel and abut against the valve handwheel. When rotating, the clamping column 302 will be clamped into the spokes connecting the edge and the middle of the valve, so that it can be clamped on the inner side of the handwheel, making it convenient to rotate the handwheel.

[0045] The remaining structures are the same as those of Example 1.

[0046] Example 3, reference Figure 1-Figure 8 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the clamping assembly 305 includes a clamping platform 305b arranged on the annular gear disk 303c, a plurality of bases 305c that are all arranged on the support sleeve 301a, and a support column 305a that is rotatably arranged on the base 305c and is slidably connected and clamped to the clamping platform 305b.

[0047] Furthermore, the upper part of the clamping platform 305b is a handle-type structure, in which a boss is arranged in the middle, and the lower part is connected to the annular gear disk 303c; the support column 305a is embedded between the handle-type structure and the boss; the handle-type structure can facilitate the rotation of the clamping platform 305b, and the boss and the handle-type structure can jointly accommodate the support column 305a for limiting the position.

[0048] During installation, the clamping platform 305b is installed on the supporting sleeve 301a, and the annular toothed disc 303c is meshed with the gear 303b, the base 305c is pushed between the handle-type structure and the boss, and then screwed into the supporting sleeve 301a by means of screws, so that the multiple supporting columns 305a jointly limit the clamping platform 305b to prevent the clamping platform 305b from falling, thereby ensuring that the connection between the annular toothed disc 303c and the gear 303b is reliable and can be stably transmitted.

[0049] The remaining structure is the same as that of Example 2.

[0050] Example 4, reference Figure 1-Figure 8 , which is the fourth embodiment of the present invention. This embodiment is different from the third embodiment in that: the upper part of the connecting block 304 is provided with a plug-in groove 304a connected to the output shaft 203; the lower part of the connecting block 304 is provided with a receiving groove 304b, and a positioning component 306 slidably arranged in the receiving groove 304b.

[0051] Furthermore, the positioning assembly 306 includes a positioning block 306a having a guide groove 306a-1 and slidably set in the receiving groove 304b, an elastic member 306b arranged in the positioning block 306a and having two ends respectively abutting against the positioning block 306a and the connecting block 304, and a limiting bolt 306c arranged on the connecting block 304 and having one end embedded in the guide groove 306a-1 and clamped with the positioning block 306a; the positioning assembly 306 can be positioned so that the positioning block 306a can abut against the middle part of the valve handwheel for preliminary positioning.

[0052] During use, align the positioning block 306a with the middle part of the valve handwheel, push the positioning block 306a to press on the middle part of the valve handwheel through the elastic member 306b, limit the downward movement distance of the positioning block 306a through the limit bolt 306c, and prevent the positioning block 306a from falling from the receiving groove 304b. The lower part of the positioning block 306a is provided with a groove that can accommodate the protrusion on the valve handwheel and can also serve as a positioning groove.

[0053] The remaining structure is the same as that of Example 3.

[0054] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be easily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, colors, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the hydrophobic valve auxiliary opening and closing device described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be changed or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of the function described herein, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to a specific embodiment, but extends to a variety of modifications that still fall within the scope of the appended claims.

[0055] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A drain valve auxiliary opening and closing device, characterized in that: include, Support unit (100); a torque amplifying unit (200) which is slidably disposed on the supporting unit (100) and is detachably connected and snap-connected to the supporting unit (100); and The connection unit (300) comprises a connection block (304) arranged at the output end of the torque amplifying unit (200), a support assembly (301) arranged on the connection block (304), three clamping columns (302) uniformly slidably arranged on the support assembly (301), and a driving assembly (303) arranged on the support assembly (301) for driving the clamping columns (302) to move.

2. The auxiliary opening and closing device of the drain valve according to claim 1 is characterized in that: The support unit (100) comprises a connecting sleeve (101) connected to the torque amplifying unit (200), two supporting arms (102) respectively arranged at two ends of the connecting sleeve (101), and a clamping sleeve (103) arranged on the supporting arm (102).

3. The auxiliary opening and closing device of the drain valve according to claim 2 is characterized in that: The torque amplifying unit (200) comprises an amplifier body (201) slidably connected and snap-fitted to the connecting sleeve (101), an input shaft (202) arranged at the upper part of the amplifier body (201), and an output shaft (203) arranged at the lower part of the amplifier body (201) and connected to the connecting block (304).

4. The auxiliary opening and closing device of the drain valve according to claim 3 is characterized in that: The connecting sleeve (101) is provided with a first engaging tooth (101a); the amplifier body (201) is provided with a second engaging tooth (201a) and an abutting step (201b); the second engaging tooth (201a) is engaged with the first engaging tooth (101a); and the connecting sleeve (101) is in abutment with the abutting step (201b).

5. The auxiliary opening and closing device of the drain valve according to claim 4 is characterized in that: The support assembly (301) comprises a support sleeve (301a) arranged on the connection block (304), three guide arms (301b) arranged in a circular shape and uniformly arranged on the outer peripheral side of the support sleeve (301a), and three sliding arms (301c) respectively slidably arranged in the three guide arms (301b); the clamping column (302) is arranged on the sliding arm (301c).

6. The auxiliary opening and closing device of the drain valve according to claim 5 is characterized in that: The driving assembly (303) is provided with three corresponding to the sliding arm (301c); the driving assembly (303) comprises a screw rod (303a) rotatably provided on the supporting sleeve (301a), located in the guiding arm (301b) and threadedly connected to the sliding arm (301c), a gear (303b) provided on the screw rod (303a), and an annular toothed disk (303c) rotatably provided on the supporting sleeve (301a) and threadedly connected to the three gears (303b); a clamping assembly (305) connected to the annular toothed disk (303c) is provided on the supporting sleeve (301a).

7. The auxiliary opening and closing device of the drain valve according to claim 6 is characterized in that: The clamping assembly (305) comprises a clamping platform (305b) arranged on the annular gear disk (303c), a plurality of bases (305c) all arranged on the support sleeve (301a), and a support column (305a) rotatably arranged on the base (305c) and slidably connected and clamped to the clamping platform (305b).

8. The auxiliary opening and closing device of the drain valve according to claim 7 is characterized in that: The upper part of the clamping platform (305b) is a handle-type structure, the middle part of which is provided with a boss, and the lower part is connected to the annular gear disk (303c); the support column (305a) is embedded between the handle-type structure and the boss.

9. The auxiliary opening and closing device of the drain valve according to claim 8 is characterized in that: The upper portion of the connection block (304) is provided with a plug-in slot (304a) connected to the output shaft (203); the lower portion of the connection block (304) is provided with a receiving slot (304b) and a positioning assembly (306) slidably arranged in the receiving slot (304b).

10. The auxiliary opening and closing device of the drain valve according to claim 9 is characterized in that: The positioning assembly (306) comprises a positioning block (306a) having a guide groove (306a-1) and slidably arranged in the receiving groove (304b), an elastic member (306b) arranged in the positioning block (306a) and having two ends respectively abutting against the positioning block (306a) and the connecting block (304), and a limiting bolt (306c) arranged on the connecting block (304) and having one end embedded in the guide groove (306a-1) and clamped with the positioning block (306a).

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