CN213180529U

CN213180529U - Top-mounted detection clamping device for valve

Info

Publication number: CN213180529U
Application number: CN202022558273.1U
Authority: CN
Inventors: 曹亮; 李国良
Original assignee: Zhejiang Keke Testing Technology Co ltd
Current assignee: Zhejiang Keke Testing Technology Co ltd
Priority date: 2020-11-07
Filing date: 2020-11-07
Publication date: 2021-05-11
Anticipated expiration: 2030-11-07

Abstract

The utility model belongs to the technical field of the valve detects, a top formula detects clamping device on valve is related to, including pressing from both sides the tight frame, be provided with the fixed plate on the tight frame of clamp, the valve that awaits measuring is placed on the fixed plate, circumference is provided with the anchor clamps of a plurality of jack catch formulas on the fixed plate, and the lower terminal surface of anchor clamps is connected with the flange face contact of the valve that awaits measuring when pressing from both sides tightly, be provided with the mounting panel in the tight frame of clamp, be provided with the drive arrangement of adjustable clamp force and drive arrangement's on the mounting panel piston rod vertical upwards, the upper end of piston rod is connected with the ejector pin, and the ejector pin is connected with the bottom contact of the valve that awaits measuring, be provided with the sensor I that. The utility model provides a valve top formula detects clamping device, its simple structure, convenient operation is convenient for to the valve adjustment clamp force of different specifications.

Description

Top-mounted detection clamping device for valve

Technical Field

The utility model belongs to the technical field of the valve detects, a top formula detects clamping device on valve is related to.

Background

After the safety valve is assembled, the opening pressure value and the sealing performance of the valve need to be detected and verified. The detection is completed through valve detection equipment, and a clamping device is required to clamp the valve to be detected during the detection. Because valves have different specifications, the clamping force required for different specifications of valves is not the same. When the clamping force is too small, the valve to be detected can loosen during detection, so that the detection accuracy and the detection smoothness are influenced; when the clamping force is too great, the valve is easily damaged.

The chinese utility model patent application CN 108195515 a discloses a valve testing machine, which comprises a test board and a control system, wherein the control system is connected with the test board, and the test board is provided with a fixing frame, a vertical beam and a positioning device; the fixed frame is provided with a right clamping device and a turnover device, the right clamping device is connected with the turnover device, the vertical beam is provided with an upper sliding rail, a lower sliding rail and a cylinder, a push rod of the cylinder is connected with the movable frame, the movable frame is installed between the upper sliding rail and the lower sliding rail to slide, the movable frame is provided with a left clamping device, and the left clamping device and the right clamping device are provided with a sealing head and a clamping jaw. This patent passes through the jack catch and presss from both sides tight flange excircle, has avoided the valve to receive the influence of any external force in the test procedure, has ensured valve strength and sealing test's accuracy.

The Chinese utility model patent CN 205192740U discloses a safety valve detection device, which adopts a hydraulic clamping mechanism, the hydraulic clamping mechanism comprises a clamping system and a hydraulic power system, the hydraulic power system comprises an electric hydraulic oil pump, a hydraulic oil cylinder and an ejector rod, the ejector rod is connected with a piston of the hydraulic oil cylinder and is provided with an air hole for passing check gas, and the hydraulic oil cylinder drives the ejector rod to move up and down under the drive of the electric hydraulic oil pump; the clamping system comprises a clamping disc, three clamping jaws and a flange type connecting disc, and a central hole is formed in the center of the clamping disc; the flange type connecting disc is used for connecting the safety valve to be detected, the bottom of the flange type connecting disc is hermetically arranged at the upper end of the ejector rod and moves along with the up-and-down movement of the ejector rod at the central hole of the clamping disc; the upper surface of the clamping disc is provided with three radial clamping jaw grooves which are uniformly distributed from a clamping disc center hole to the clamping disc edge, the cross section of each clamping jaw groove is in an inverted T shape, the bottom structures of the clamping jaws are matched with the clamping jaw groove structures and can move in the clamping jaw grooves along the clamping disc radial direction, bosses with different heights are arranged on two opposite side surfaces of each clamping jaw which are perpendicular to the clamping jaw groove direction, and the bosses with different heights are used for clamping safety valves to be detected with different heights.

The clamping force of the valve detection device cannot be adjusted, so that the valve detection device cannot adapt to different requirements of valves with different specifications on the clamping force.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, provide a valve top formula detects clamping device, its simple structure, convenient operation is convenient for to the valve adjustment clamp force of different specifications.

In order to solve the above technical problem, the purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a top formula detects clamping device on valve, includes the clamping frame, be provided with the fixed plate on the clamping frame, the valve that awaits measuring is placed on the fixed plate, circumference is provided with the anchor clamps of a plurality of jack catch formulas on the fixed plate, and the lower terminal surface of anchor clamps is connected with the flange face contact of the valve that awaits measuring when pressing from both sides tightly, be provided with the mounting panel in the clamping frame, be provided with the drive arrangement of adjustable clamp force and drive arrangement's on the mounting panel piston rod vertically upwards, the upper end of piston rod is connected with the ejector pin, and the ejector pin is connected with the bottom contact of the valve that awaits measuring, be provided with the sensor one that detects the clamp force between ejector pin and the.

In the valve top-up type detection clamping device, the clamping frame is a rectangular frame and comprises an upper frame and a lower frame, and a plurality of second sensors for weighing the valve to be detected are arranged between the upper frame and the lower frame.

In the above-mentioned valve top-up type detecting and clamping device, the first sensor and the second sensor are weighing sensors or force sensors.

In the above-mentioned valve top-up type detection clamping device, the number of the second sensors is four, and the second sensors are respectively located at four corners of the clamping frame.

In the above-mentioned valve top-up type detecting and clamping device, a radial chute is arranged on the fixing plate, and the clamp is slidably arranged in the chute.

In the valve top-lift type detection clamping device, the driving device is a hydraulic cylinder or an air cylinder, the clamping force is increased when the hydraulic cylinder or the air cylinder is pressurized, the hydraulic cylinder is connected with a hydraulic pump station, the air cylinder is connected with an air source, the adjustment of the clamping force is completed through the hydraulic cylinder or the air cylinder, and the clamping force is increased when the hydraulic cylinder or the air cylinder is pressurized.

In the above-mentioned valve top-up type detection clamping device, a gasket is arranged on the upper end face of the ejector rod, and the gasket is in contact connection with the bottom end of the valve to be detected.

In the above-mentioned valve top-up type detection clamping device, the mounting plate and the fixing plate are connected by a long rod bolt.

In the above-mentioned valve top-up type detection clamping device, the required clamping force may be preset or may be obtained by calculation, where the calculation formula is K (G + P × S), where K is a sealing coefficient, G is a valve gravity, and may be measured by a second sensor, P is a set pressure, and S is a flow passage cross-sectional area. The above calculation process may be performed by a calculation program.

In the above-mentioned valve top-up type detection clamping device, the pressurization action of the hydraulic cylinder or the air cylinder is controlled by a PLC or a single chip microcomputer in the control system, and the pressure relief action of the hydraulic cylinder or the air cylinder is controlled by a PLC or a single chip microcomputer or a manual pressure relief valve in the control system.

Compared with the prior art, the utility model, following beneficial effect has:

the utility model provides a valve check out test set simple structure, convenient operation is convenient for to the valve adjustment clamp force of different specifications, both can carry out reliable clamp to the valve that awaits measuring and press from both sides, has avoided the clamp force too big again and has damaged the valve that awaits measuring to be fit for the detection demand of various specification valves.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a front view of the present invention;

reference numerals: 1. a clamping frame; 2. a fixing plate; 3. a valve to be tested; 4. a clamp; 5. mounting a plate; 6. a drive device; 7. a piston rod; 8. a top rod; 9. a first sensor; 10. a second sensor; 11. a chute; 12. a gasket; 13. a long rod bolt.

Detailed Description

The invention will be further described in the following with reference to specific embodiments thereof, with reference to the accompanying drawings, in which figures 1-2:

a valve top-pushing type detection clamping device comprises a clamping frame, wherein a fixing plate 2 is arranged on the clamping frame 1, a valve 3 to be detected is placed on the fixing plate 2, a plurality of clamping jaw type clamps 4 are circumferentially arranged on the fixed plate 2, when in clamping, the clamps 4 are in contact connection with the flange surface of the valve 3 to be tested, the clamping frame 1 is internally provided with a mounting plate 5, the mounting plate 5 is connected with the fixing plate 2 through a long rod bolt 13, a driving device 6 capable of adjusting the clamping force is arranged on the mounting plate 5, a piston rod 7 of the driving device 6 is vertically upward, the upper end of the piston rod 7 is connected with a mandril 8, the mandril 8 is in contact connection with the bottom end of the valve 3 to be tested, a first sensor 9 for detecting clamping force is arranged between the ejector rod 8 and the piston rod 7, and the driving device 6 drives the valve 3 to be tested to move upwards and is matched with the clamp 4 to clamp the valve 3 to be tested.

In order to weigh the valve 3 to be measured, the clamping frame 1 is a rectangular frame and comprises an upper frame and a lower frame, and a plurality of second sensors 10 for weighing the valve 3 to be measured are arranged between the upper frame and the lower frame.

In order to make the weighing more accurate, the second sensor 10 is provided with four sensors, which are respectively positioned at four corners of the clamping frame 1.

Be provided with radial spout 11 on above-mentioned fixed plate 2, anchor clamps 4 are slided and are established in spout 11, slide anchor clamps 4 to the outside before placing valve 3 that awaits measuring, slide anchor clamps 4 to the inside side after placing valve 3 that awaits measuring, make anchor clamps 4 be located the top of valve 3 flange face that awaits measuring.

The driving device 6 is a hydraulic cylinder or an air cylinder, the clamping force is increased when the hydraulic cylinder or the air cylinder is pressurized, the hydraulic cylinder is connected with a hydraulic pump station, the air cylinder is connected with an air source, the pressurizing action of the hydraulic cylinder or the air cylinder is controlled by a PLC or a single chip microcomputer, and the pressure relief action of the hydraulic cylinder or the air cylinder is controlled by the PLC or the single chip microcomputer or a manual pressure relief valve.

The clamping process of the clamping device is as follows: placing the valve 3 to be tested on the fixing plate 2 and weighing, moving the clamp 4 to be positioned above the flange surface of the valve 3 to be tested, then controlling a hydraulic pump station or an air source to inject oil or gas into the driving device 6, slowly moving the piston rod 7 of the driving device 6 upwards, driving the valve 3 to be tested to move upwards through the ejector rod 8, and abutting the flange surface against the clamp 3 and gradually clamping. When the clamping force is detected to reach the required clamping force, controlling a hydraulic pump station or an air source to stop, and keeping the clamping force; when the clamping force is smaller than the value of the required clamping force, controlling a hydraulic pump station or an air source to be started to supplement the clamping force until the value of the required clamping force is reached, and stopping; and after the valve 3 to be measured is measured, controlling the hydraulic pump station or the air source to perform pressure relief action, and stopping after the clamping force is slowly reduced.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A valve top-up type detection clamping device comprises a clamping frame (1) and is characterized in that, a fixing plate (2) is arranged on the clamping frame (1), a valve (3) to be tested is placed on the fixing plate (2), a plurality of clamping jaw type clamps (4) are circumferentially arranged on the fixed plate (2), a mounting plate (5) is arranged in the clamping frame (1), a driving device (6) capable of adjusting the clamping force is arranged on the mounting plate (5), a piston rod (7) of the driving device (6) is vertically upward, the upper end of the piston rod (7) is connected with a mandril (8), the mandril (8) is in contact connection with the bottom end of the valve to be tested (3), a first sensor (9) for detecting the clamping force is arranged between the ejector rod (8) and the piston rod (7), and the driving device (6) drives the valve to be tested (3) to move upwards and is matched with the clamp (4) to clamp the valve to be tested (3).

2. The valve top-loading type detection clamping device is characterized in that the clamping frame (1) is a rectangular frame and comprises an upper frame and a lower frame, and a plurality of second sensors (10) for weighing the valve (3) to be detected are arranged between the upper frame and the lower frame.

3. The valve top-up detection clamping device is characterized in that four sensors (10) are arranged at four corners of the clamping frame (1).

4. The valve lift-up test clamping device according to claim 1, wherein the fixing plate (2) is provided with a radial sliding groove (11), and the clamp (4) is slidably arranged in the sliding groove (11).

5. The valve top-up detection clamping device according to claim 1, wherein the driving device (6) is a hydraulic cylinder or an air cylinder, the clamping force is increased when the hydraulic cylinder or the air cylinder is pressurized, the hydraulic cylinder is connected with a hydraulic pump station, and the air cylinder is connected with an air source.

6. The valve top-up detection clamping device is characterized in that a gasket (12) is arranged on the upper end face of the ejector rod (8), and the gasket (12) is in contact connection with the bottom end of a valve (3) to be detected.

7. The valve lift-up test fixture of claim 1, wherein the mounting plate (5) and the fixing plate (2) are connected by long rod bolts (13).