Positioner connection structure for an orbital valve

Abstract

This invention patent relates to a valve, specifically to a signal feedback device connection structure for an orbital valve, comprising: an outer frame, the upper end of which is used for fixedly connecting with the signal feedback device, and the lower end of which is used for fixedly connecting with the housing of the actuator of the orbital valve; a bushing, which is arranged inside the outer frame and is slidably connected with the outer frame, for enabling the bushing to rotate around its axis inside the outer frame; a transmission sleeve, which is sleeved inside the bushing and axially slides inside the bushing; a guide rail groove extending along the axial direction is formed inside the bushing, and a sliding member embedded in the guide rail groove is arranged on the transmission sleeve. By adopting this signal feedback device connection structure for the orbital valve as the signal feedback device support assembly, the orbital valve can trigger the signal feedback device through the above-mentioned guide rail groove and sliding member, which is simple and reliable.

Description

Technical Field

[0001] This invention patent relates to a valve, specifically to a signal feedback device connection structure for an orbital valve. Background Art

[0002] For a common ball valve, the sphere rotates 90° horizontally to open or close the valve. Generally, the signal feedback device bracket assembly connects the valve and the signal feedback device and rotates 90° horizontally to enable the signal feedback device to transmit the opening and closing signals. When an orbital valve opens and closes, the valve stem drives the sphere to rotate 90° around the center line of the valve body and moves up and down simultaneously to open or close the valve. Ordinary signal feedback device bracket assemblies or connection structures can only connect ordinary valves and signal feedback devices to rotate horizontally. Currently, there is no bracket assembly or connection structure specifically for orbital valves that enables orbital valves to be better connected to signal feedback devices. Summary of the Invention

[0003] The purpose of the present invention is to provide a signal feedback device connection structure specifically for orbital valves.

[0004] To achieve the above purpose, the technical solution adopted in this application is a signal feedback device connection structure for an orbital valve, including:

[0005] An outer frame, the upper end of which is used to be fixedly connected to the signal feedback device, and the lower end of which is used to be fixedly connected to the housing of the actuator of the orbital valve;

[0006] A bushing, which is arranged inside the outer frame and is slidably connected to the outer frame, and is used to enable the bushing to rotate around its axis inside the outer frame;

[0007] A transmission sleeve, which is sleeved inside the bushing and rotates around its axis and slides axially inside the bushing;

[0008] Wherein, a guide rail groove extending in the axial direction is formed inside the bushing, and a sliding member embedded in the guide rail groove is arranged on the transmission sleeve.

[0009] By adopting this signal feedback device connection structure for an orbital valve as the signal feedback device bracket assembly, the orbital valve can trigger the signal feedback device through the above-mentioned guide rail groove and sliding member, which is simple and reliable.

[0010] Furthermore, the sliding member is detachably connected to the transmission sleeve, so that the cooperation between the sliding member and the guide rail groove can be more flexible, and at the same time, it is convenient to replace the sliding member.

[0011] Furthermore, a through hole extending in the axial direction and penetrating the transmission sleeve is formed on the transmission sleeve, and a bolt for connecting the transmission sleeve to the valve stem of the orbital valve is arranged inside the through hole. Two bolts, that is, a pair of bolts, can be arranged here.

[0012] Further, the transmission sleeve includes an upper part and a lower part. The diameter of the upper part is adapted to the inner cavity aperture of the shaft sleeve, and the diameter of the upper part > the diameter of the lower part. The lower part is used to abut against the valve stem of the orbital valve, reducing the friction between the shaft sleeve and the gland, and between the shaft sleeve and the bottom cover when the valve opens and closes.

[0013] Further, the length of the upper part < the length of the lower part. The sliding member is arranged on the side circumference of the upper part. After such arrangement, unnecessary friction is minimized as much as possible.

[0014] Further, the outer frame includes a gland, a transition bracket and a bottom cover; the upper end of the gland is used for fixedly connecting with the positioner, the lower end is connected to the transition bracket, the lower end of the transition bracket is connected to the bottom cover, and the lower end of the bottom cover is used for fixedly connecting with the housing of the actuator of the orbital valve.

[0015] Further, shaft shoulders are provided at both the upper end and the lower end of the shaft sleeve. The shaft sleeve abuts against the gland and the bottom cover respectively through the shaft shoulders at its upper and lower ends.

[0016] Further, the lateral plate surfaces of the shaft shoulders at the upper and lower ends of the shaft sleeve abut against the gland and the bottom cover respectively through sliding bearings. After such arrangement, the friction between the shaft sleeve and the gland, and between the shaft sleeve and the bottom cover when the valve opens and closes is reduced.

[0017] Further, the axial plate surfaces of the shaft shoulders at the upper and lower ends of the shaft sleeve abut against the gland and the bottom cover respectively through thrust washers. This arrangement is to prevent the phenomenon of jamming due to direct metal-to-metal contact between the shaft sleeve and the gland, and between the shaft sleeve and the bottom cover when the valve opens and closes.

[0018] Further, a positioning shaft penetrates through the gland, and a sealing ring built in the gland is tightly sleeved outside the positioning shaft; a sealing ring is provided at the contact surface between the gland and the transition bracket for sealing; a sealing ring is provided at the fixed connection part of the bottom cover with the housing of the actuator of the orbital valve for sealing. This arrangement is to prevent rainwater and dust from entering the inside of the transition bracket assembly and damaging the structure when the device is installed outdoors.

[0019] The following further describes the present invention in conjunction with the drawings and specific embodiments. The additional aspects and advantages of the present invention will be partially given in the following description, and partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings forming a part of the present invention are used to assist in understanding the present invention. The content provided in the drawings and the related description in the present invention can be used to explain the present invention, but do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1Schematic installation diagram of the signal feedback device connection structure for the track valve of the present invention;

[0022] Figure 2 Schematic structural diagram of the signal feedback device connection structure for the track valve of the present invention when the valve is closed;

[0023] Figure 3 Schematic structural diagram of the signal feedback device connection structure for the track valve of the present invention when the valve is open;

[0024] In the figure, the markings are: 1 - transition bracket; 2 - gland; 3 - bushing; 4 - drive sleeve; 5 - positioning shaft; 6 - flat key; 7 - first sealing ring; 8 - second sealing ring; 9 - third sealing ring; 10 - first sliding bearing; 11 - second sliding bearing; 12 - first thrust washer; 13 - second thrust washer; 14 - socket head cap screw; 15 - signal feedback device; 16 - actuator; 17 - track valve; 18 - outer frame. Detailed implementation manners

[0025] The present invention will be described clearly and completely below with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the present invention based on these descriptions. Before describing the present invention with reference to the accompanying drawings, it should be particularly noted that:

[0026] The technical solutions and technical features provided in each part including the following description in the present invention can be combined with each other without conflict.

[0027] In addition, the embodiments of the present invention involved in the following description are usually only part of the embodiments of the present invention, rather than all of the embodiments. Therefore, all other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] Regarding the terms and units in the present invention. The term "including" and any variations thereof in the description, claims and relevant parts of the present invention are intended to cover non-exclusive inclusion.

[0029] Refer to Figures 1 to 3 , the signal feedback device connection structure for the track valve includes an outer frame 18, a bushing 3 and a drive sleeve 4, which are arranged in three layers from outside to inside.

[0030] The upper end of the outer frame 18 is used for fixedly connecting with the signal feedback device 15, and the lower end of the outer frame 18 is used for fixedly connecting with the housing of the actuator 16 of the track valve 17; the bushing 3 is arranged inside the outer frame 18 and is slidably connected with the outer frame 18, so that the bushing 3 can rotate around its axis inside the outer frame 18; the transmission sleeve 4 is sleeved inside the bushing 3 and slides axially while rotating around its axis inside the bushing 3; a guide rail groove extending in the axial direction is formed inside the bushing 3, and a sliding member embedded in the guide rail groove is arranged on the transmission sleeve 4.

[0031] By adopting the signal feedback device connection structure for the track valve as the bracket assembly of the signal feedback device 15, the track valve 17 can trigger the signal feedback device 15 through the above-mentioned guide rail groove and sliding member, which is simple and reliable. The guide rail groove is set as a straight groove.

[0032] The sliding member is detachably connected to the transmission sleeve 4, so that the cooperation between the sliding member and the guide rail groove can be more flexible, and at the same time, it is convenient to replace the sliding member. Here, the sliding member can adopt a flat key 6. Relative movement often occurs between the flat key 6 and the bushing 3 with the opening and closing of the valve. The materials of the flat key 6 and the bushing 3 are preferably high-strength stainless steels such as 20Cr13, and the surface roughness must be less than or equal to 3.2 μm.

[0033] A through hole extending in the axial direction and penetrating the transmission sleeve 4 is formed on the transmission sleeve 4, and a bolt for connecting the transmission sleeve 4 with the valve stem of the track valve 17 is arranged inside the through hole. Here, two bolts can be set, that is, a pair of bolts.

[0034] The transmission sleeve 4 includes an upper part and a lower part. The diameter of the upper part is adapted to the inner cavity diameter of the bushing 3, and the diameter of the upper part > the diameter of the lower part. The lower part is used for abutting against the valve stem of the track valve 17.

[0035] The length of the upper part < the length of the lower part. The sliding member is arranged on the side circumference of the upper part. After such setting, unnecessary friction can be minimized as much as possible. The outer frame 18 includes a gland 2, a transition bracket 1 and a bottom cover; the upper end of the gland 2 is used for fixedly connecting with the signal feedback device 15, the lower end is connected with the transition bracket 1, the lower end of the transition bracket 1 is connected with the bottom cover, and the lower end of the bottom cover is used for fixedly connecting with the housing of the actuator 16 of the track valve 17.

[0036] Both the upper and lower ends of the bushing 3 are provided with shoulders. The bushing 3 abuts against the gland 2 and the bottom cover respectively through the shoulders at its upper and lower ends. The lateral plate surfaces of the shoulders at the upper and lower ends of the bushing 3 abut against the gland 2 and the bottom cover respectively through the first sliding bearing 10 and the second sliding bearing 11, reducing the friction between the bushing and the gland, and between the bushing and the bottom cover when the valve opens and closes. The end surfaces of the shoulders at the upper and lower ends of the bushing 3 abut against the gland 2 and the bottom cover respectively through the first thrust washer 12 and the second thrust washer 13, preventing the phenomenon of jamming due to direct contact between metals. The roughness of the contact surfaces here preferably reaches 3.2 μm.

[0037] A positioning shaft 5 is inserted through the gland 2, and a third sealing ring 9 is tightly sleeved outside the positioning shaft 5 and is placed inside the gland 2; the contact surface between the gland 2 and the transition bracket 1 is sealed with a second sealing ring 8; the first sealing ring 7 is used for sealing at the fixed connection between the bottom cover and the housing of the actuator 16 of the track valve 17.

[0038] Because there is a possibility that the valve is installed outdoors, in order to prevent rainwater and dust from entering the inside of the signal feedback device 15 bracket assembly, it is preferable to install sealing rings (O-ring seals) between the transition bracket 1 and the actuator 16, between the gland 2 and the transition bracket 1, and between the positioning shaft 5 and the gland 2. The roughness of the sealing ring groove reaches 1.6 μm, and the compression amount of the sealing ring used here preferably reaches 15% - 20%.

[0039] Specifically, when installing the signal feedback device connection structure for the track valve, first install the transition bracket 1. The lower end of the transition bracket 1 is connected to the actuator 16 of the valve. The connection method at the top of the valve actuator 16 can be selected as threaded connection, welding connection, bolt connection, etc. (Since the connection method at the top of the valve actuator 16 in this embodiment is threaded connection, the signal feedback device connection structure for the track valve and the actuator 16 adopt threaded plus welding connection). Then, from the upper part, fix the drive sleeve 4 with the installation key 6 on the valve stem of the track valve 17 with an internal hexagonal socket head screw 14. Install the bushing 3 equipped with the sliding bearing 10 and the thrust washer. Fix the gland 2 on the transition bracket 1 with bolts, and fix the upper flat side of the positioning shaft 5 on the signal feedback device 15 with screws, and connect the lower flat side with the flat side hole of the bushing 3.

[0040] During use, when the track valve 17 changes from the open state to the closed state or from the closed state to the open state, the signal feedback device connection structure for the track valve will convert the up and down movement into a horizontal rotation of 90° while rotating the valve stem of the track valve 17 by 90° around the center line of the valve body, enabling the signal feedback device 15 to operate normally and transmit the valve open and closed signals.

[0041] Specifically, when the orbital valve 17 is opened from the closed state, while the valve stem rotates counterclockwise by 90°, it moves upward. The valve stem drives the drive sleeve 4 to rotate counterclockwise by 90° and move upward through two socket head cap screws 14 connected to the drive sleeve 4. The flat key 6 fixed on the drive sleeve 4 moves upward in the guide groove of the bushing 3 and at the same time drives the bushing 3 to rotate counterclockwise by 90° in the horizontal direction (at this time, while the valve stem rotates counterclockwise by 90°, the upward movement is converted into the bushing 3 rotating counterclockwise by 90° in the horizontal direction). The bushing 3 drives the positioning shaft 5 to rotate counterclockwise by 90° so that the position indicator 15 reaches the open position and transmits the signal that the valve is fully open.

[0042] When the orbital valve 17 is closed from the open state, while the valve stem rotates clockwise by 90°, it moves downward. The valve stem drives the drive sleeve 4 to rotate clockwise by 90° and move downward through two socket head cap screws 14 connected to the drive sleeve 4. The flat key 6 fixed on the drive sleeve 4 moves downward in the guide groove of the bushing 3 and at the same time drives the bushing 3 to rotate clockwise by 90° in the horizontal direction (at this time, while the valve stem rotates clockwise by 90°, the downward movement is converted into the bushing 3 rotating clockwise by 90° in the horizontal direction). The bushing 3 drives the positioning shaft 5 to rotate clockwise by 90° so that the position indicator 15 reaches the closed position and transmits the signal that the valve is fully closed.

[0043] The above describes the relevant content of the present invention. Those of ordinary skill in the art will be able to implement the present invention based on these descriptions. Based on the above content of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

Claims

1. A signal feedback device connection structure for an orbital valve, characterized in that Comprising: An outer frame, the upper end of which is used for fixedly connecting with a positioner, and the lower end of which is used for fixedly connecting with the housing of the actuator of the track valve; A bushing, which is arranged inside the outer frame and is slidably connected with the outer frame, and is used for enabling the bushing to rotate around its axis inside the outer frame; A transmission sleeve, which is sleeved inside the bushing and slides axially while rotating around its axis inside the bushing; Wherein, a guide rail groove extending in the axial direction is formed inside the bushing, and a sliding member embedded in the guide rail groove is arranged on the transmission sleeve; The outer frame includes a gland, a transition bracket and a bottom cover; the upper end of the gland is used for fixedly connecting with a positioner, the lower end is connected to the transition bracket, the lower end of the transition bracket is connected to the bottom cover, and the lower end of the bottom cover is used for fixedly connecting with the housing of the actuator of the track valve; the transmission sleeve for installing a flat key is fixed on the track valve stem with an internal hexagonal socket head screw from the upper part, the bushing equipped with a sliding bearing and a thrust washer is installed, the gland is fixed on the transition bracket with bolts, a positioning shaft is penetrated through the gland, the upper end flat of the positioning shaft is fixed on the positioner with a screw, and the lower end flat is connected with the flat hole of the bushing; A through hole extending in the axial direction and penetrating the transmission sleeve is formed on the transmission sleeve, and a bolt for connecting the transmission sleeve with the track valve stem is arranged inside the through hole, and the bushing drives the positioning shaft to rotate.

2. The signal feedback device connection structure for an orbital valve according to claim 1, wherein, The sliding member is detachably connected to the transmission sleeve.

3. The signal feedback device connection structure for an orbital valve according to claim 1, wherein The transmission sleeve includes an upper part and a lower part, the diameter of the upper part is adapted to the inner cavity aperture of the bushing, the diameter of the upper part > the diameter of the lower part, and the lower part is used for abutting against the valve stem of the track valve.

4. The signal feedback device connection structure for an orbital valve according to claim 3, wherein The length of the upper part < the length of the lower part.

5. The signal feedback device connection structure for an orbital valve according to claim 1, characterized in that, Axial shoulders are arranged at both the upper end and the lower end of the bushing, and the bushing abuts against the gland and the bottom cover respectively through the axial shoulders at its upper and lower ends.

6. The signal feedback device connection structure for an orbital valve according to claim 1, characterized in that, The lateral plate surfaces of the axial shoulders at the upper and lower ends of the bushing abut against the gland and the bottom cover respectively through sliding bearings.

7. The signal feedback device connection structure for an orbital valve according to claim 1, wherein, The axial plate surfaces of the axial shoulders at the upper and lower ends of the bushing abut against the gland and the bottom cover respectively through thrust washers.

8. The signal feedback device connection structure for an orbital valve according to claim 1, wherein, A sealing ring placed inside the gland is tightly sleeved outside the positioning shaft; a sealing ring is arranged at the contact surface between the gland and the transition bracket for sealing; a sealing ring is arranged at the fixed connection part of the bottom cover with the housing of the actuator of the track valve for sealing.

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