Valve for practical training

Abstract

A valve for practical training belongs to the field of training valves and comprises a shell, a screw is arranged in the shell, one end of the screw extends out of the shell and is connected with a hand wheel, an enclasping assembly in threaded connection with the screw is arranged in the shell and comprises a first enclasping block and a second enclasping block which are in semi-arc block shapes, the first enclasping block is fixedly connected with the shell, and the second enclasping block is fixedly connected with the shell. The side wall of the inner ring of the first holding block is of a smooth structure, the second holding block is movably arranged in the shell, threads are arranged on the side wall of the inner ring of the second holding block, one side of the second holding block is connected with the shell through a spring jacking assembly, the other side of the second holding block is connected with a push rod, and the push rod sequentially penetrates through the first holding block and the shell and extends outwards. The unlocking handle used for pushing the push rod is hinged to the outer wall of the shell, the second enclasping block can be pushed to move through the unlocking handle and the push rod, threaded fit between the second enclasping block and the screw rod can be quickly released, the screw rod can be quickly reset, screwing reset is not needed, the overall structure is simple, and reset is quick and convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to training valve technical field, especially a valve for practical training. BACKGROUND

[0002] In view of the leakage and disaster accident emergency practical operation disposal of pipeline valve and device in petroleum chemical industry, it needs to carry out valve closing and material breaking operation, in order to improve the valve opening and closing skill of operator, the operator needs to carry out the simulation operation training of valve opening and closing.

[0003] In the simulation operation training of valve opening and closing, the valve with material operation will produce safety hidden danger, therefore, in the practical training link of valve opening and closing, the simulation practical training valve is generally used instead of conventional valve, the simulation practical training valve includes hand wheel, screw rod and valve body and the like structure, and angle sensor is arranged in the valve body, the screw rod is operated through the hand wheel to simulate the closing operation of valve, and the rotation angle of screw rod is detected through angle sensor to judge the state of valve.

[0004] The existing simulation practical training valve needs the operator to rotate the screw rod in the opposite direction to reset after valve operation, cannot quickly restore the valve, is inconvenient to use, and the simulation valve with self-resetting function needs the setting of motor, electric lock and the like electric control structure, the overall structure is complex, and the use cost is high, and the existing simulation practical training valve needs to ensure the concentricity of angle sensor and valve rotating shaft, and the installation precision requirement is high, in addition, the existing simulation practical training valve has no fixing structure, needs to be placed on the specific support limiting structure, and installation and use are inconvenient. UTILITY MODEL CONTENTS

[0005] In order to solve the technical problems that the conventional simulation practical training valve cannot quickly restore the valve, influences the use convenience, and the overall structure of the simulation valve with self-resetting function is complex, and the use cost is high in the foregoing background art, the utility model provides a valve for practical training.

[0006] The utility model technical scheme is as follows:

[0007] The utility model provides a kind of valve for practical training, including shell, screw rod is equipped in shell, one end of screw rod projects shell and is connected with hand wheel, screw rod is equipped in shell and is connected with screw thread and is embraced tightly component, embraced tightly component includes first embraced tightly block and second embraced tightly block of half arc block, first embraced tightly block is fixedly connected with shell, the inner circle lateral wall of first embraced tightly block is smooth structure, second embraced tightly block is movably arranged in shell, and thread is equipped on the inner circle lateral wall of second embraced tightly block, second embraced tightly block side is connected with shell by spring jacking component, and the other side of second embraced tightly block is connected with push rod, push rod passes first embraced tightly block, shell in proper order and projects outward, and unlocking handle for pushing push rod is hinged on the outer wall of shell, by the cooperation of screw rod and embraced tightly component, the tightening closing operation process of valve can be simulated, the inner circle of first embraced tightly block is set to be smooth, the inner circle of second embraced tightly block is provided with thread, and second embraced tightly block can be moved by unlocking handle and push rod, so that the thread cooperation between second embraced tightly block and screw rod can be quickly released, screw rod can be quickly reset, without being twisted again, reset is fast and convenient, and overall structure is simple, with low use cost.

[0008] Preferably, a pressure detection unit is fixedly arranged in the shell, and the end of the screw rod away from the hand wheel is used to contact the pressure detection unit, so that the pressure applied by the screw rod can be monitored in real time, thereby directly reflecting the pressure change during the tightening closing operation of the valve, providing more accurate data reference for the trainer and improving the training effect.

[0009] Preferably, the two ends of the second embraced tightly block abutting against the first embraced tightly block are respectively provided with a connecting hole, and a through hole is formed in the first embraced tightly block and the shell, and one push rod is connected to each connecting hole, and the push rod passes through the through hole of the first embraced tightly block and the shell in proper order and projects outward, so that the second embraced tightly block is more evenly stressed during movement, can move more stably, the thread cooperation between the second embraced tightly block and the screw rod can be quickly and effectively released, the reliability and stability of the structure are enhanced, and the installation stability of the second embraced tightly block is improved by the push rod.

[0010] Preferably, the unlocking handle includes a handle body and a pushing part, the handle body is of a cross-shaped structure, facilitating the trainer to hold and operate, and providing a better force application point, and the pushing part is provided with two, and the two pushing parts are fixedly arranged on the handle body, the pushing part is of a hollow structure, one end of the push rod is connected to the pushing part, not only making the connection more stable, but also further optimizing the force transmission, so that the action of the push rod pushing the second embraced tightly block is more smooth.

[0011] Preferably, a spring reset component for pushing the screw rod to reset is arranged in the shell, so that the screw rod can be automatically and quickly reset after being released from being embraced tightly, without manually twisting to reset, greatly improving the efficiency and convenience of training, reducing the operation time and labor cost.

[0012] Preferably, the spring reset assembly comprises a first spring and a first mounting seat, the first mounting seat is threadedly connected with the screw rod, a bearing is fixedly arranged on one side of the first mounting seat close to the pressure detection unit, the first mounting seat is arranged to facilitate the adjustment of the position of the bearing and the maintenance in later period, and the first spring is arranged between the bearing and the shell.

[0013] Preferably, the spring reset assembly comprises a first spring and a first mounting seat, the first mounting seat is threadedly connected with the screw rod, a bearing is fixedly arranged on one side of the first mounting seat close to the pressure detection unit, the first mounting seat is arranged to facilitate the adjustment of the position of the bearing and the maintenance in later period, and the first spring is arranged between the bearing and the shell.

[0014] Preferably, the spring reset assembly comprises a first spring and a first mounting seat, the first mounting seat is threadedly connected with the screw rod, a bearing is fixedly arranged on one side of the first mounting seat close to the pressure detection unit, the first mounting seat is arranged to facilitate the adjustment of the position of the bearing and the maintenance in later period, and the first spring is arranged between the bearing and the shell.

[0015] Preferably, the spring reset assembly comprises a first spring and a first mounting seat, the first mounting seat is threadedly connected with the screw rod, a bearing is fixedly arranged on one side of the first mounting seat close to the pressure detection unit, the first mounting seat is arranged to facilitate the adjustment of the position of the bearing and the maintenance in later period, and the first spring is arranged between the bearing and the shell.

[0016] Through the above technical scheme, the advantages of the utility model are as follows:

[0017] 1. The screw rod and the clamping assembly are used in cooperation, the clamping assembly comprises a first clamping block and a second clamping block in the shape of a semicircular block, the inner ring of the first clamping block is smooth, the inner ring of the second clamping block is provided with threads, and the second clamping block can be moved by unlocking the handle and the push rod, so that the threaded cooperation between the second clamping block and the screw rod can be quickly released, the screw rod can be quickly reset, the screw rod does not need to be twisted for resetting, the resetting is quick and convenient, the overall structure is simple, and the use cost is low.

[0018] 2. The pressure detection unit is fixedly arranged in the shell, and the end of the screw rod away from the hand wheel is used for contacting the pressure detection unit, so that the pressure applied by the screw rod can be monitored in real time, the pressure change in the valve tightening and closing operation process can be directly reflected, more accurate data reference can be provided for the trainer, the training effect is improved, the pressure detection unit does not need to ensure the concentricity with the rotating shaft of the valve like the angle sensor, the requirement for the installation precision is reduced, and the installation and use are facilitated.

[0019] 3. The interior of the shell is provided with a first spring, so that the screw can be automatically reset quickly after releasing the grip, without manual reset, greatly improving the efficiency and convenience of training, reducing operation time and labor cost, the screw is in contact with the first spring through the bearing, avoiding the influence of the screw rotating around the shaft on the first spring.

[0020] 4. The second spring and the screw are arranged, the position of the screw in the nut can be adjusted, and then the tightening force of the second spring on the second grip block is adjusted to adapt to different training requirements. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the present application, the following will briefly introduce the drawings needed to be used in the description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0022] Figure 1 For the three-dimensional structure of the valve for practical training according to one or more embodiments of the present application Figure 1 ;

[0023] Figure 2 For the three-dimensional structure of the valve for practical training according to one or more embodiments of the present application Figure 2 ;

[0024] Figure 3 For the front view structure diagram of the valve for practical training according to one or more embodiments of the present application

[0025] Figure 4 For the side view structure diagram of the valve for practical training according to one or more embodiments of the present application

[0026] Figure 5 For the top view structure diagram of the valve for practical training according to one or more embodiments of the present application

[0027] Figure 6 For Figure 3 the A-A cross-sectional structure diagram of the structure shown

[0028] The components represented by the reference numerals in the drawings are:

[0029] 1, hand wheel; 2, shell; 3, fixing mechanism; 4, screw; 5, unlocking handle; 6, first grip block; 7, second grip block; 8, push rod; 9, first spring; 10, pressure sensor; 11, second spring; 12, screw; 13, nut; 14, first mounting seat; 15, pin; 16, push part; 17, second mounting seat; 18, bearing. DETAILED DESCRIPTION

[0030] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the utility model will be clearly and completely described below in combination with the drawings in the specific embodiments. Obviously, the embodiments described below are only some of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the patent, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the patent.

[0031] In a typical embodiment of the utility model, as shown in Figures 1-6 A valve for practical training is provided, comprising a hand wheel 1, a shell 2, a fixing mechanism 3, a screw rod 4 and an unlocking handle 5. The shell 2 is of a hollow structure, and the fixing mechanism 3 is fixedly installed at one end of the shell 2 for fixed installation of the entire valve. A clamping assembly is detachably installed inside the other end of the shell 2. The screw rod 4 passes through the clamping assembly and is threadedly connected with the clamping assembly. One end of the screw rod 4 extends out of the shell 2 and is fixedly connected with the hand wheel 1. The other end of the screw rod 4 is used for contacting with a pressure detection unit. The pressure detection unit is a pressure sensor 10, which is fixedly installed inside the shell 2. The screw rod 4 is also connected with a spring return assembly, which can drive the screw rod 4 to axially move for return under the action of the spring return assembly. The clamping assembly is used for limiting the return of the screw rod 4. The unlocking handle 5 is arranged outside the shell 2 and is hingedly connected with the shell 2. The unlocking handle 5 can cancel the limitation of the clamping assembly on the screw rod 4, so that the screw rod 4 can quickly return under the action of the spring return assembly.

[0032] Specifically as shown in Figure 6 The clamping assembly comprises a first clamping block 6 and a second clamping block 7. Both the first clamping block 6 and the second clamping block 7 are of a semicircular block structure. The first clamping block 6 and the second clamping block 7 are oppositely arranged at the two sides of the screw rod 4 and are in abutment and enclose the screw rod 4 in the circumferential direction. The inner ring side wall of the first clamping block 6 is of a smooth structure. The inner ring side wall of the second clamping block 7 is provided with threads, so as to be matched with the screw rod 4 in a threaded connection manner.

[0033] A positioning hole is formed in the first clamping block 6 in the radial direction thereof. A pin hole is formed at the corresponding position of the shell 2. A pin 15 passes through the pin hole and the positioning hole in sequence and is connected with the first clamping block 6, so as to realize the positioning of the first clamping block 6. The second clamping block 7 is movably installed inside the shell 2 and can move in the radial direction. Specifically, the shell 2 and the second clamping block 7 are connected through a spring jacking assembly. The second clamping block 7 is jacked and abutted with the first clamping block 6 by the spring jacking assembly, so as to ensure the effectiveness of the threaded cooperation between the second clamping block 7 and the screw rod 4.

[0034] The two ends of the second clamping block 7 abutting against the first clamping block 6 are respectively provided with a connecting hole, and the corresponding positions of the first clamping block 6 and the shell 2 are provided with through holes, each connecting hole is correspondingly connected with a push rod 8, one end of the push rod 8 away from the second clamping block 7 passes through the through holes of the first clamping block 6 and the shell 2 in sequence and extends outward, the push rod 8 is close to the unlocking handle 5, the push rod 8 can be pressed by the unlocking handle 5, and then the second clamping block 7 is driven to move away from the first clamping block 6 by the push rod 8, so that the threaded cooperation between the second clamping block 7 and the screw rod 4 is cancelled, and thus the screw rod 4 can be quickly reset under the action of the spring reset assembly.

[0035] In the embodiment, the push rod 8 is inserted into the connecting hole of the second clamping block 7, and in other embodiments, the push rod 8 can also be threadedly connected with the connecting hole of the second clamping block 7, so as to improve the connection stability between the push rod 8 and the second clamping block 7.

[0036] As shown in Figure 2 , Figure 3 and Figure 4 , the unlocking handle 5 includes a handle body and a push part 16, the handle body is a cross-shaped structure, the handle body includes a horizontal rod and a vertical rod, the push part 16 is provided with two, the two push parts 16 are fixedly arranged at the two ends of the horizontal rod of the handle body, and the axis of the push part 16 is perpendicular to the axis of the horizontal rod, the push part 16 is a hollow structure, so as to be connected with the push rod 8, one end of the push rod 8 away from the second clamping block 7 is inserted into the push part 16, so as to facilitate pushing the push rod 8 through the push part 16.

[0037] It can be understood that the push rod 8 can be inserted into the push part 16, or can be threadedly connected with the push part 16, and the specific connection mode can be selected according to actual needs, which is not limited here.

[0038] As shown in Figure 6 , the spring reset assembly includes a first spring 9, a first mounting seat 14 and a bearing 18, the first mounting seat 14 is installed on the screw rod 4 in a threaded connection mode, the bearing 18 is fixedly installed on the side of the first mounting seat 14 close to the pressure sensor 10, the bearing 18 is a one-way thrust cylindrical roller bearing, the first spring 9 is located between the bearing 18 and the shell 2, and the first spring 9 is sleeved outside the screw rod 4, when the hand wheel 1 drives the screw rod 4 to move towards the pressure sensor 10, the screw rod 4 drives the first mounting seat 14 and the bearing 18 above it to move synchronously, so as to compress the first spring 9, when the threaded cooperation between the second clamping block 7 and the screw rod 4 is cancelled, the screw rod 4 can be quickly reset under the action of the first spring 9, and the setting of the bearing 18 can avoid the influence of the rotation of the screw rod 4 around the shaft on the first spring 9.

[0039] The spring pressing assembly comprises a second spring 11, a screw 12 and a nut 13, the nut 13 is fixedly installed on the outer wall of the shell 2 by welding or the like, the shell 2 is provided with a through hole allowing the screw 12 to pass through, the outer wall of the second pressing block 7 is provided with a mounting hole for mounting the second spring 11, one end of the second spring 11 is arranged in the mounting hole on the second pressing block 7 and is fixed, the other end of the second spring 11 abuts against the adjacent end of the screw 12, the screw 12 is threadedly connected with the nut 13, so that the length of the screw 12 extending into the shell 2 can be adjusted, thereby adjusting the compression amount of the second spring 11, and ensuring that the second pressing block 7 can be firmly pressed on the outer portion of the screw rod 4.

[0040] It can be understood that the spring pressing assembly can be provided with one group or multiple groups, and the specific number can be selected according to actual needs, which is not limited here.

[0041] As shown in Figure 6 , the pressure sensor 10 is fixedly installed in the interior of the shell 2 through the second mounting seat 17, the pressure sensor 10 is fixedly installed on the second mounting seat 17, one end of the first spring 9 is placed on the second mounting seat 17, and the second mounting seat 17 is fixedly connected with the shell 2 through a bolt to support and limit the pressure sensor 10 and the first spring 9.

[0042] As shown in Figure 2 , the fixing mechanism 3 is a haf joint structure, specifically, the fixing mechanism 3 comprises two half-ring or arc-shaped housings that can be closed, a plurality of bolt holes for connection and fixation are uniformly arranged at the edge portions of the two half-ring housings, and corresponding bolts and nuts are arranged, the two housings can be tightly butted together by tightening the bolts to be pressed on the specified pipeline, thereby realizing the fixed installation of the valve, without the need to be installed on a specific support and limiting structure, facilitating the installation and use of the valve.

[0043] A display unit is further arranged, the pressure sensor 10 is connected with the display unit through a cable, the display unit can display the pressure value detected by the pressure sensor 10, so as to be viewed by the training personnel, thereby accurately judging whether the valve is completely closed, the use of the pressure sensor 10 does not need to ensure the concentricity with the valve rotating shaft like the angle sensor, thereby reducing the requirement for installation precision and facilitating the installation and use.

[0044] The specific working principle is as follows:

[0045] The valve is installed on the designated pipeline as a whole through the fixing mechanism 3, and the push rod 8 is connected with the second clamping block 7; the training personnel drives the screw rod 4 to rotate around the shaft through the hand wheel 1, the screw rod 4 moves towards the direction close to the pressure sensor 10, the screw rod 4 drives the first mounting seat 14 and the bearing 18 above the first mounting seat 14 to move synchronously to compress the first spring 9, the screw rod 4 contacts the pressure sensor 10, the display unit displays the change of the pressure value, when the pressure value reaches the set value, the indication screw rod 4 is moved to the position, and the valve is in the completely closed state;

[0046] When the valve operation training is completed (i.e. after the valve is in the completely closed state), the second clamping block 7 is moved away from the screw rod 4 by pushing the second clamping block 7 through the push rod 8, the screw thread cooperation between the second clamping block 7 and the screw rod 4 is cancelled, the screw rod 4 is quickly reset under the action of the first spring 9, so that the valve is in the open state, the first mounting seat 14 contacts the first clamping block 6 and the second clamping block 7 during the resetting process, so as to limit the position of the screw rod 4 and prevent the screw rod 4 from being ejected outward, after the screw rod 4 is reset, the pressing on the unlocking handle 5 is cancelled, and the second clamping block 7 is clamped on the screw rod 4 under the action of the second spring 11, so as to be screwed with the screw rod 4 again.

[0047] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A valve for practical training, comprising: The housing (2) is provided with a screw rod (4) inside, one end of the screw rod (4) extends out of the housing (2) and is connected with a hand wheel (1), characterized in that the housing (2) is provided with a clamping assembly threadedly connected with the screw rod (4) inside, the clamping assembly comprises a first clamping block (6) and a second clamping block (7) in the shape of a semicircular block, the first clamping block (6) is fixedly connected with the housing (2), the inner ring side wall of the first clamping block (6) is smooth, the second clamping block (7) is movably arranged in the housing (2), the inner ring side wall of the second clamping block (7) is provided with threads, one side of the second clamping block (7) is connected with the housing (2) through a spring pressing assembly, the other side of the second clamping block (7) is connected with a push rod (8), the push rod (8) passes through the first clamping block (6) and the housing (2) in sequence and extends outward, and the outer wall of the housing (2) is hingedly connected with an unlocking handle (5) for pushing the push rod (8).

2. The valve of claim 1, wherein: A pressure detection unit is fixedly arranged in the housing (2), and one end of the screw rod (4) away from the hand wheel (1) is used for contacting the pressure detection unit.

3. The valve of claim 1, wherein: The two ends of the second clamping block (7) abutting against the first clamping block (6) are respectively provided with a connecting hole, a through hole is formed in the first clamping block (6) and the housing (2), and one push rod (8) is connected to each connecting hole in a corresponding mode, and the push rod (8) passes through the through hole of the first clamping block (6) and the housing (2) in sequence and extends outward.

4. The valve of claim 1, wherein: The unlocking handle (5) comprises a handle main body and a pushing portion (16), the handle main body is in the shape of a cross, and two pushing portions (16) are fixedly arranged on the handle main body, the pushing portion (16) is in a hollow structure, and one end of the push rod (8) is connected with the pushing portion (16).

5. The valve of claim 2, wherein: The inside of the housing (2) is provided with a spring reset assembly for pushing the screw rod (4) to reset.

6. The valve of claim 5, wherein: The spring reset assembly comprises a first spring (9) and a first mounting seat (14), the first mounting seat (14) is threadedly connected with the screw rod (4), a bearing (18) is fixedly arranged on one side of the first mounting seat (14) close to the pressure detection unit, and the first spring (9) is located between the bearing (18) and the housing (2).

7. The valve of claim 1, wherein: The spring pressing assembly comprises a second spring (11) and a screw (12), a nut (13) is fixedly arranged on the outer wall of the housing (2), the housing (2) is provided with a through hole coaxial with the nut (13), the screw (12) is threadedly connected with the nut (13) and extends into the housing (2) through the through hole, the outer wall of the second clamping block (7) is provided with a mounting hole, one end of the second spring (11) is fixedly arranged in the mounting hole, and the other end of the second spring (11) abuts against the adjacent screw (12).

8. The valve of claim 1, wherein: The spring pressing assembly is provided with at least one group.

9. The valve of claim 1, wherein: Further, a fixing mechanism (3) is arranged, the housing (2) is fixedly mounted on the fixing mechanism (3), and the fixing mechanism (3) is in the shape of a half joint.

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