Large-caliber desuperheating water regulating valve

Abstract

The utility model discloses a large-caliber desuperheating water regulating valve, which comprises a valve body, a valve core, a valve rod and a valve rod, the valve cover is fixedly installed at the top of the valve body through a bolt, and a first air bag and a second air bag are arranged on the valve cover and communicate with each other through a second air channel; and the piston mechanism comprises air grooves which are symmetrically arranged, the air grooves are communicated with the second air bag through air channels, pistons are arranged in the air grooves in a sliding mode, and the pistons are pushed by the bolts to move so that the first air bag and the second air bag can be inflated and expanded. According to the large-caliber desuperheating water regulating valve, the first air bag and the second air bag are inflated, the second air bag is inflated and expanded, so that the joint of the valve cover and the valve body is sealed, leakage is prevented, and after the first air bag is inflated and expanded, damping is generated due to contact friction between the first air bag and the bolt; therefore, loosening and falling of the bolt caused by vibration of the adjusting valve during working are prevented.

Description

Technical Field

[0001] The utility model relates to a regulating valve, in particular to a large-caliber temperature-reducing water regulating valve. Background Art

[0002] The cooling water regulating valve is a valve mechanism used to control the flow rate of cooling water.

[0003] Publication number CN215334731U, publication date 2021-12-28, discloses a large-diameter cooling water regulating valve, including a valve body, a valve port 1 is arranged on the left side of the interior of the valve body, a valve port 2 is arranged on the right side of the interior of the valve body, a valve core is arranged in contact with valve port 1 and valve port 2, a valve stem is rotatably arranged on the upper side of the valve core, a valve cover is rotatably arranged on the stem wall of the valve stem, a sealing ring is attached to the bottom of the valve cover in contact with the side wall of the valve stem, a connecting plate is fixedly arranged on the upper side wall of the valve body, a connecting groove is provided at the bottom of the valve cover, and threaded holes are provided on the side walls of the connecting plate and the connecting groove, a screw 1 is rotatably arranged inside the threaded hole, and a sealing gasket 1 is attached to the side wall where the valve body and the valve cover are in contact.

[0004] In the prior art including the above-mentioned patent, the gland is fixed to the valve body by the cooperation of screws and threaded holes, and the sealing performance of the connection is improved by compressing the sealing gasket between the valve body and the valve cover to shrink. However, due to the large inlet and outlet pressure difference of the valve in the main steam system, the valve is prone to vibrate during operation, causing the screws to loosen, thereby loosening the connection between the valve cover and the valve body, resulting in reduced sealing effect of the sealing gasket and leakage. Utility Model Content

[0005] The utility model aims to provide a large-caliber cooling water regulating valve, which is used to solve the problem that the valve is prone to vibration during operation, resulting in the loosening of screws.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large-caliber cooling water regulating valve, comprising:

[0007] A valve body, in which a valve core is installed;

[0008] A valve cover, which is fixedly mounted on the top of the valve body by bolts, wherein a first air bag and a second air bag are arranged on the valve cover, and the first air bag and the second air bag are connected through a second air passage;

[0009] The piston mechanism comprises symmetrically arranged air grooves, the air grooves are connected with the second air bag through air passages, a piston is slidably arranged in the air grooves, and the piston is pushed and moved by bolts to inflate the first air bag and the second air bag.

[0010] Preferably, a valve core sleeve is arranged on the outer side of the valve core, and the valve core sleeve is symmetrically provided with grooves.

[0011] Preferably, a locking mechanism is further included, which includes a slider, and the slider is driven to move and engage with the slot.

[0012] Preferably, the locking mechanism further comprises a slide groove, the slide groove is communicated with the air groove, the slider is arranged in the slide groove, and the first end of the slider is located in the air groove.

[0013] Preferably, a through hole is provided on the sliding block.

[0014] Preferably, the valve core sleeve is provided with a third air passage and a fourth air passage, and the two are connected through a through hole.

[0015] Preferably, a first air channel is provided in the valve body, an air inlet of the first air channel is communicated with the air groove, and an air outlet is communicated with an air inlet of a fourth air channel.

[0016] Preferably, a fifth air channel is provided on the valve cover, an air inlet of the fifth air channel is communicated with an air outlet of the third air channel, and the air outlet is communicated with the second airbag.

[0017] Preferably, a mounting block is symmetrically arranged on the top of the valve body, and a screw hole is opened on the mounting block, and the screw hole is threadedly connected to the bolt.

[0018] Preferably, a valve stem is rotatably provided on the top of the valve core, and a valve cap is fixedly installed on the top of the valve stem.

[0019] In the above technical scheme, a large-diameter cooling water regulating valve provided by the utility model has the following beneficial effects: when the bolt is screwed in, the piston is pushed to move in the air groove, thereby pushing the gas in the air groove into the second air bag through the air channel, and the second air bag is inflated to seal the connection between the valve cover and the valve body to prevent leakage. When the second air bag expands to the limit, the gas further enters the first air bag through the second air channel. After the first air bag is inflated, the gap between the bolt and the valve cover is eliminated, and the first air bag fits the surface of the threaded rod of the bolt. The first air bag and the bolt are in contact and friction to generate damping, thereby preventing the vibration of the regulating valve during operation and causing the bolt to loosen and fall off. During installation, the valve core sleeve and the valve core are installed in the valve body, and the slider is driven to move so that the slider is engaged with the slot, thereby fixing the valve core sleeve and the valve core in the valve body, preventing the valve core sleeve and the valve core from popping out of the valve body due to the high internal pressure of the regulating valve during operation after the bolt is loosened, thereby effectively improving the safety performance of the regulating valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 A schematic diagram of a three-dimensional structure provided for an embodiment of the utility model;

[0022] Figure 2 A schematic diagram of a front cross-sectional structure provided for an embodiment of the utility model;

[0023] Figure 3 An enlarged schematic diagram of structure A provided in an embodiment of the utility model;

[0024] Figure 4 A schematic diagram of the side sectional structure provided for an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 1. Valve body; 11. Mounting block; 111. Screw hole; 12. First air channel; 13. Piston mechanism; 131. Air groove; 132. Piston; 133. Push rod; 134. First threaded hole; 14. Locking mechanism; 141. Slide groove; 142. Slider; 1421. Through hole; 143. Push plate; 2. Valve cover; 21. First air bag; 22. Mounting groove; 23. Second air channel; 24. Second air bag; 25. Fifth air channel; 3. Valve stem; 4. Valve bonnet; 5. Bolt; 6. Valve core sleeve; 61. Third air channel; 62. Slot; 63. Fourth air channel; 7. Valve core. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] like Figure 1-4 As shown, a large-caliber desuperheating water regulating valve comprises:

[0029] A valve body 1, inside which a valve core 7 is installed;

[0030] The valve cover 2 is fixedly mounted on the top of the valve body 1 by means of bolts 5. The valve cover 2 is provided with a first air bag 21 and a second air bag 24, and the two are connected through a second air passage 23;

[0031] The piston mechanism 13 includes a symmetrically arranged air groove 131, which is connected to the second airbag 24 through an air passage. A piston 132 is slidably arranged in the air groove 131, and the piston 132 is pushed and moved by the bolt 5 to inflate the first airbag 21 and the second airbag 24.

[0032] Specifically, a mounting block 11 is symmetrically arranged on the top of the valve body 1, and a screw hole 111 is provided on the mounting block 11, and the screw hole 111 is threadedly connected with the bolt 5. The valve core 7 is installed in the valve body 1, and then the mounting groove 22 provided on the valve cover 2 is clamped with the mounting block 11, so that the valve cover 2 is positioned and installed, and then the bolt 5 is screwed into the screw hole 111 provided on the mounting block 11, so that the valve cover 2 is fixed to the top of the valve body 1.

[0033] Furthermore, during the screwing process, the bolt 5 pushes the push rod 133 provided on the piston 132 to move, thereby pushing the piston 132 to move in the air groove 131 through the push rod 133, thereby pushing the gas in the air groove 131 into the second air bag 24 through the air passage, and the second air bag 24 is inflated to seal the connection between the valve cover 2 and the valve body 1 to prevent leakage.

[0034] Furthermore, when the second airbag 24 expands to its limit, the gas further enters the first airbag 21 through the second air passage 23. After the first airbag 21 is inflated, the gap between the bolt 5 and the valve cover 2 is eliminated, and the first airbag 21 fits the threaded rod surface of the bolt 5. The contact friction between the first airbag 21 and the bolt 5 produces damping, thereby preventing the regulating valve from vibrating during operation and causing the bolt 5 to loosen and fall off.

[0035] In the above technology, when the bolt 5 is screwed in, it pushes the piston 132 to move in the air groove 131, thereby pushing the gas in the air groove 131 into the second air bag 24 through the air channel. The second air bag 24 is inflated to seal the connection between the valve cover 2 and the valve body 1 to prevent leakage. When the second air bag 24 expands to the limit, the gas further enters the first air bag 21 through the second air channel 23. After the first air bag 21 is inflated, the gap between the bolt 5 and the valve cover 2 is eliminated, and the first air bag 21 fits the surface of the threaded rod of the bolt 5. The contact friction between the first air bag 21 and the bolt 5 produces damping, thereby preventing the vibration of the regulating valve during operation from causing the bolt 5 to loosen and fall off.

[0036] As a further embodiment of the present invention, a valve core sleeve 6 is arranged outside the valve core 7 , and the valve core sleeve 6 is symmetrically provided with clamping grooves 62 .

[0037] Specifically, the locking mechanism 14 is also included, which includes a slider 142, and the slider 142 is driven to move and engage with the slot 62. During installation, the valve core sleeve 6 and the valve core 7 are installed in the valve body 1, and the slider 142 is driven to move so that the slider 142 engages with the slot 62, thereby fixing the valve core sleeve 6 and the valve core 7 in the valve body 1, preventing the valve core sleeve 6 and the valve core 7 from popping out of the valve body 1 due to the high internal pressure of the regulating valve when the bolt 5 is loosened, thereby effectively improving the safety performance of the regulating valve.

[0038] As a further embodiment of the present invention, the locking mechanism 14 further includes a slide groove 141 , the slide groove 141 is communicated with the air groove 131 , a slider 142 is disposed in the slide groove 141 , and a first end of the slider 142 is located in the air groove 131 .

[0039] Specifically, during the process of screwing in the bolt 5, the piston 132 is pushed to move in the air groove 131. During the movement, the piston 132 pushes against the arc surface of the first end of the slider 142, so that the slider 142 moves and withdraws from the air groove 131, so that the second end of the slider 142 moves and enters the slot 62. At the same time, the push plate 143 provided on the slider 142 pulls the spring, so that the valve core sleeve 6 and the valve core 7 are fixed in the valve body 1. No additional driving source is needed to drive the slider 142 to move, the structure is simple, and the manufacturing cost is saved.

[0040] When disassembling, first take out the bolt 5, then remove the valve cover 2, screw the threaded rod into the first threaded hole 134 at the first end of the push rod 133 through the screw hole, then pull the push rod 133 to drive the piston 132 to reset, the slider 142 is pushed by the piston 132 and the slider 142 is pulled out of the slot 62 by the spring, and the valve core sleeve 6 and the valve core 7 can be disassembled and replaced.

[0041] As a further embodiment of the present invention, a through hole 1421 is formed on the slider 142 .

[0042] Specifically, the valve core sleeve 6 is provided with a third air passage 61 and a fourth air passage 63, and the two are connected through a through hole 1421. When the bolt 5 is screwed in, the push rod 133 provided on the piston 132 is pushed to move, thereby pushing the piston 132 to move in the air groove 131 through the push rod 133, so that the gas in the air groove 131 enters the second air bag 24 through the third air passage 61 and the fourth air passage 63. The through hole 1421 is provided on the slider 142 to connect the third air passage 61 and the fourth air passage 63, and the gas is directly transported through the air passage of the valve core sleeve 6, without bypassing the valve core sleeve 6 to open a complex air passage, effectively simplifying the air passage and facilitating the manufacture. At the same time, by providing a through hole 1421 on the slider 142, the slider 142 can simultaneously fix the valve core sleeve 6 and transport the gas, so that one structure can realize multiple functions, effectively simplifying the structure and saving the manufacturing cost.

[0043] As a further embodiment of the present invention, a first air channel 12 is provided in the valve body 1 , an air inlet of the first air channel 12 is communicated with the air groove 131 , and an air outlet is communicated with an air inlet of the fourth air channel 63 .

[0044] Specifically, the valve cover 2 is provided with a fifth air passage 25, the air inlet of the fifth air passage 25 is communicated with the air outlet of the third air passage 61, and the air outlet is communicated with the second air bag 24. When the bolt 5 is screwed in, the push rod 133 provided on the piston 132 is pushed to move, thereby pushing the piston 132 to move in the air groove 131 through the push rod 133, thereby pushing the gas in the air groove 131 into the first air passage 12, and then sequentially entering the fourth air passage 63 and the third air passage 61 through the first air passage 12, and then entering the fifth air passage 25 through the third air passage 61, and finally entering the second air bag 24, which is inflated to seal the connection between the valve cover 2 and the valve body 1 to prevent leakage.

[0045] Since the valve core sleeve 6 is cylindrical, when the valve core sleeve 6 is installed, it is necessary to align the slot 62 with the slide groove 141. By setting an air inlet pipe at the air inlet of the fourth air channel 63 and docking it with the groove set at the air outlet of the first air channel 12, the fourth air channel 63 is connected with the first air channel 12. At the same time, the valve core sleeve 6 is positioned and installed so that the slot 62 is aligned with the slide groove 141.

[0046] As a further embodiment of the present invention, a valve stem 3 is rotatably arranged on the top of the valve core 7 , and a valve cap 4 is fixedly installed on the top of the valve stem 3 .

[0047] Specifically, the valve stem 3 is driven to rotate by the valve cap 4, and the valve stem 3 is threadedly connected to the valve core sleeve 6, thereby driving the valve core 7 to move in the valve core sleeve 6, thereby adjusting the size of the cross-section of the flow channel, thereby adjusting the flow size.

[0048] Working principle: install the valve core 7 in the valve body 1, and then clamp the installation groove 22 on the valve cover 2 with the installation block 11, so as to position and install the valve cover 2, and then screw the bolt 5 into the screw hole 111 provided on the installation block 11, so as to fix the valve cover 2 on the top of the valve body 1. During the screwing process, the bolt 5 pushes the push rod 133 provided on the piston 132 to move, so that the push rod 133 pushes the piston 132 to move in the air groove 131, so that the gas in the air groove 131 is pushed into the first air channel 12, and then enters the fourth air channel 63 and the third air channel 61 in sequence through the first air channel 12, and then enters the fifth air channel 25 through the third air channel 61, and finally enters the second air bag 24. The second air bag 24 is inflated to seal the connection between the valve cover 2 and the valve body 1 to prevent leakage. When the bolt 5 is screwed in, it pushes the piston 132 to move in the air groove 131. During the movement, the piston 132 pushes the arc surface of the first end of the slider 142, so that the slider 142 moves and withdraws from the air groove 131, so that the second end of the slider 142 moves and enters the slot 62. At the same time, the push plate 143 provided on the slider 142 pulls the spring, so that the valve core sleeve 6 and the valve core 7 are fixed in the valve body 1, to prevent the valve core sleeve 6 and the valve core 7 from popping out of the valve body 1 due to the high internal pressure of the regulating valve when the bolt 5 is loosened, thereby effectively improving the safety performance of the regulating valve.

[0049] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A large-caliber cooling water regulating valve, characterized in that: include: A valve body (1) having a valve core (7) installed inside thereof; A valve cover (2) is fixedly mounted on the top of the valve body (1) by means of bolts (5); a first air bag (21) and a second air bag (24) are arranged on the valve cover (2), and the two are connected via a second air passage (23); The piston mechanism (13) comprises symmetrically arranged air grooves (131), wherein the air grooves (131) are connected to the second air bag (24) through an air passage, and a piston (132) is slidably arranged in the air grooves (131). The piston (132) is pushed and moved by the bolts (5) to inflate the first air bag (21) and the second air bag (24).

2. A large-caliber cooling water regulating valve according to claim 1, characterized in that: A valve core sleeve (6) is arranged outside the valve core (7), and a clamping groove (62) is symmetrically provided on the valve core sleeve (6).

3. A large-caliber cooling water regulating valve according to claim 1, characterized in that: It also includes a locking mechanism (14), which includes a slider (142), and the slider (142) is driven to move and engage with the slot (62).

4. A large-diameter cooling water regulating valve according to claim 3, characterized in that: The locking mechanism (14) further comprises a slide groove (141), wherein the slide groove (141) is in communication with the air groove (131), the slider (142) is arranged in the slide groove (141), and the first end of the slider (142) is located in the air groove (131).

5. A large-caliber cooling water regulating valve according to claim 3, characterized in that: The sliding block (142) is provided with a through hole (1421).

6. A large-caliber cooling water regulating valve according to claim 2, characterized in that: The valve core sleeve (6) is provided with a third air passage (61) and a fourth air passage (63), and the two are connected via a through hole (1421).

7. A large-caliber cooling water regulating valve according to claim 1, characterized in that: A first air channel (12) is provided in the valve body (1); an air inlet of the first air channel (12) is communicated with the air groove (131), and an air outlet is communicated with an air inlet of a fourth air channel (63).

8. A large-caliber cooling water regulating valve according to claim 1, characterized in that: The valve cover (2) is provided with a fifth air channel (25), the air inlet of the fifth air channel (25) is communicated with the air outlet of the third air channel (61), and the air outlet is communicated with the second air bag (24).

9. A large-caliber cooling water regulating valve according to claim 1, characterized in that: A mounting block (11) is symmetrically arranged on the top of the valve body (1), and a screw hole (111) is provided on the mounting block (11), and the screw hole (111) is threadedly connected to the bolt (5).

10. A large-diameter cooling water regulating valve according to claim 1, characterized in that: A valve stem (3) is rotatably arranged on the top of the valve core (7), and a valve cap (4) is fixedly installed on the top of the valve stem (3).

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