CN210347130U

CN210347130U - Online calibration tool for safety valve

Info

Publication number: CN210347130U
Application number: CN201921220499.1U
Authority: CN
Inventors: 梁达斌; 杨洪哲; 陆司政
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-31
Filing date: 2019-07-31
Publication date: 2020-04-17
Anticipated expiration: 2029-07-31

Abstract

The utility model discloses an online check-up instrument of relief valve, check-up instrument main part, the top of check-up instrument main part are equipped with the mounting panel, and there is the cylinder on the top surface of mounting panel through bolt fixed mounting, and the movable rod is installed to the bottom of cylinder. The safety valve online calibration tool can directly perform calibration without disassembling the safety valve and an isolation system, the tool is fixed on a pipeline to be detected through a buckle, and a valve of the safety valve is connected with the calibration tool through a gripper, so that the safety valve online calibration tool is convenient and quick to use and is not limited by the position of the safety valve; the safety valve opening pressure is detected in an online checking mode, and the influence of temperature, matching errors among a valve rod, a spring and a sealing element and other factors on the safety valve opening pressure can be fully considered; because the structure is simple, reliable, light and durable, the influence of some field environments (high temperature, dust, complex connection forms and the like) on the calibration instrument is eliminated, and an accurate calibration result can be obtained.

Description

Online calibration tool for safety valve

Technical Field

The utility model belongs to the technical field of the check-up, specifically be an online calibration instrument of relief valve.

Background

The safety valve is a valve for safety protection, and its opening and closing member is in normally closed state under the action of external force, and when the pressure of medium in the equipment or pipeline is raised and exceeds the defined value, it can be automatically opened, and the medium pressure in the pipeline or equipment can be prevented from exceeding the defined value by means of discharging medium to the exterior of system. The safety valve is mainly used for boiler, pressure container and pipeline, and its control pressure is not greater than specified value, so that it can play important role in protecting personal safety and equipment operation. Aiming at the problems that the volume ratio of the safety valve of a power plant is high and the pressure is high in a supercritical or above power plant, the safety valve is generally directly welded on a protected equipment pipeline, and the tripping specified value is influenced by the change of mechanical properties such as a spring due to the rise of temperature after the equipment is operated. After normal operation, the safety valve needs to be subjected to thermal state online verification for ensuring the safety of equipment, and the safety valve is adjusted to an accurate take-off specified value, so that potential safety hazards can be eliminated.

In the prior art, the checking tool of the safety valve has the following disadvantages:

1. when the safety valve at a higher position is checked, the safety valve needs to be disassembled firstly and then is transported to a workshop where the checking platform is located for checking, and a large crane needs to be used when the safety valve is disassembled, so that time and labor are wasted, the checking cost is higher, and the safety valve can be damaged to a certain extent in the hoisting, disassembling and transporting processes, and the using effect of the safety valve is influenced.

2. When the traditional calibration console is used for calibrating the safety valve, a long time is needed to obtain a calibration result, and the working efficiency is low.

Therefore, the utility model provides an online check-up instrument of relief valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problem that the existing safety valve checking tool cannot check the safety valve on line, the safety valve on-line checking tool is provided.

In order to achieve the above object, the utility model provides a following technical scheme: an online safety valve checking tool comprises a checking tool main body, wherein a mounting plate is arranged at the top end of the checking tool main body, an air cylinder is fixedly mounted on the surface of the top end of the mounting plate through a bolt, a movable rod is mounted at the bottom end of the air cylinder, the movable rod is connected with the mounting plate in a penetrating manner, a tension sensor is mounted at the bottom end of the movable rod, a gripper mounting seat is fixedly mounted at the bottom end of the tension sensor, a spring cover is fixedly mounted on the surface of the top end of the gripper mounting seat, a spring is mounted in the spring cover, a first pressing block and a second pressing block are respectively mounted at two ends of the spring cover, the first pressing block and the second pressing block are respectively fixedly connected with two ends of the spring, a first gripper fixing plate is mounted at one side inside the gripper mounting seat, and a second gripper fixing plate is, the mounting plate comprises a first gripper fixing plate and a second gripper fixing plate, wherein a limiting plate is installed between the first gripper fixing plate and the second gripper fixing plate, grippers are installed at the bottom ends of the first gripper fixing plate and the second gripper fixing plate, supporting fixing rods are installed at the bottom ends of the two sides of the mounting plate through bolt fixing, and hoop buckles are installed at the bottom ends of the supporting fixing rods.

Wherein, the buckle includes:

the connecting rod, the first hoop, the first rotating shaft, the second hoop, the second rotating shaft, the fixing pin and the nut;

the connecting rod with the bottom that supports the dead lever runs through fixed connection, the both sides of connecting rod all are equipped with the concave groove, the top of first hoop passes through first pivot is installed in one side the concave groove, the top of second hoop passes through the second pivot is installed at the opposite side the concave groove is interior, first hoop with the fixed plate is all installed to the bottom of second hoop, and pass through the fixing pin bolt is with two the fixed plate is connected, the both ends threaded connection of fixing pin bolt has the nut.

The display device comprises a mounting plate, a display fixing seat and a tension display, wherein the display fixing seat is fixedly mounted on one side of the top surface of the mounting plate through a bolt, and the tension display is mounted at the top end of the display fixing seat.

Wherein, the supporting and fixing rod is an electric telescopic rod.

The tentacles on two sides of the spring are respectively in lap joint with the first gripper fixing plate and the second gripper fixing plate.

The calibration tool comprises a calibration tool body, a storage battery, a control switch, a tension sensor and a support fixing rod, wherein the storage battery and the control switch are installed on the calibration tool body and are electrically connected, the control switch is electrically connected with the tension sensor and the support fixing rod, and the tension sensor is electrically connected with the tension display.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this online check-up instrument of relief valve need not to dismantle the relief valve, need not the isolated system, can directly carry out the check-up, detains through the hoop and fixes the instrument on waiting to detect the pipeline, is connected the valve of relief valve and check-up instrument through the tongs, and convenient and fast does not receive the restriction of relief valve position during the use.

2. The on-line checking mode is adopted to detect the opening pressure of the safety valve, and the influence of factors such as the matching error between the temperature and the valve rod, the spring and the sealing element on the opening pressure of the safety valve can be fully considered.

3. Because the structure is simple, reliable, light and durable, the influence of some field environments (high temperature, dust, complex connection forms and the like) on the calibration instrument is eliminated, and an accurate calibration result can be obtained.

Drawings

Fig. 1 is a schematic view of the overall three-dimensional structure of the present invention;

fig. 2 is a schematic view of the overall plane structure of the present invention;

fig. 3 and 4 are schematic views of the local structure of the present invention.

FIG. 1, a tool body is verified; 2. mounting a plate; 3. a cylinder; 301. a movable rod; 302. a tension sensor; 303. a gripper mounting seat; 304. a gripper; 305. a spring housing; 306. a spring; 307. a first pressing block; 308. a second pressing block; 309. a first gripper fixing plate; 310. a second gripper fixing plate; 311. a limiting plate; 4. a tension display; 401. a display fixing seat; 5. supporting the fixed rod; 6. a hoop buckle; 601. a connecting rod; 602. a first hoop 603 and a first rotating shaft; 604. a second hoop; 605. a second rotating shaft; 606. fixing the pin bolt; 607. and a nut.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Embodiment one, referring to fig. 1-4, the utility model provides a technical scheme: an online safety valve checking tool comprises a checking tool main body 1, a mounting plate 2 is arranged at the top end of the checking tool main body 1, a cylinder 3 is fixedly mounted on the top end surface of the mounting plate 2 through a bolt, a movable rod 301 is mounted at the bottom end of the cylinder 3, the movable rod 301 is connected with the mounting plate 2 in a penetrating manner, a tension sensor 302 is mounted at the bottom end of the movable rod 301, a gripper mounting seat 303 is fixedly mounted at the bottom end of the tension sensor 302, a spring cover 305 is fixedly mounted on the top end surface of the gripper mounting seat 303, a spring 306 is mounted in the spring cover 305, a first pressing block 307 and a second pressing block 308 are respectively mounted at two ends of the spring cover 305, the first pressing block 307 and the second pressing block 308 are respectively fixedly connected with two ends of the spring 306, a first gripper fixing plate 309 is mounted at one side inside the gripper mounting seat 303, a second gripper fixing plate 310 is mounted at the other side inside the gripper mounting seat 303, the bottom ends of the first gripper fixing plate 309 and the second gripper fixing plate 310 are both provided with a gripper 304, the bottom ends of the two sides of the mounting plate 2 are both fixedly provided with a supporting fixing rod 5 through bolts, and the bottom end of the supporting fixing rod 5 is provided with a hoop buckle 6; the check personnel act on the spring 306 through the application of force to the first pressing block 307 and the second pressing block 308, so that the hand grip 304 can be opened, the lifting nut of the safety valve can be clamped, then the cylinder 3 is controlled to start working through the control switch, the movable rod 301 can move upwards, the tension sensor 302 can transmit the detected tension to the tension display 4, and the check personnel can visually know the situation conveniently.

Wherein, buckle 6 includes:

the connecting rod 601, the first hoop 602, the first rotating shaft 603, the second hoop 604, the second rotating shaft 605, the fixing pin 606 and the nut 607;

connecting rod 601 and the bottom of supporting dead lever 5 run through fixed connection, the both sides of connecting rod 601 all are equipped with the concave groove, install in one side concave groove through first pivot 603 on the top of first hoop 602, the top of second hoop 604 is installed in the opposite side concave groove through second pivot 605, the fixed plate is all installed to the bottom of first hoop 602 and second hoop 604, and connect two fixed plates through fixing pin 606, the both ends threaded connection of fixing pin 606 has nut 607, the calibrator passes through hoop 6 with calibration tool fixed mounting on waiting to detect the pipeline, high durability and convenient operation, and do not receive the restriction of relief valve position.

Wherein, there is display fixing base 401 top surface one side of mounting panel 2 through bolt fixed mounting, and pulling force display 4 is installed on the top of display fixing base 401, and pulling force display 4 can feed back the check-up data of relief valve to the verifier.

Wherein, supporting the dead lever 5 and being electric telescopic handle, electric telescopic handle can adjust the height of mounting panel 2, the check-up personnel's of being convenient for operation.

Wherein, the tentacles at both sides of the spring 306 are respectively overlapped with the first and second

gripper fixing plates

309 and 310.

Wherein, install battery and control switch on the check-up instrument main part 1, battery and control switch electric connection, control switch and force sensor 302 and support dead lever 5 electric connection, force sensor 302 and force display 4 electric connection.

The working principle is as follows:

an online checking tool for a safety valve comprises a checking tool main body 1; at first, the verifier passes through the hoop buckle 6 and with verification tool fixed mounting on waiting to detect the pipeline, high durability and convenient operation, and do not receive the restriction of relief valve position, then the verifier acts on spring 306 through the application of force to first briquetting 307 and second briquetting 308, make tongs 304 open, can give the centre gripping with the lifting nut of relief valve, then control cylinder 3 through the control switch and begin work, make movable rod 301 can the up movement, force sensor 302 can transmit the pulling force that detects to the tensile force display 4 this moment, the visual understanding condition of verifier of being convenient for, the support dead lever 5 of electronic flexible rod formula can adjust the height between mounting panel 2 and the hoop buckle 6, be convenient for the operation of verifier.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an online check-up instrument of relief valve, includes check-up instrument main part (1), its characterized in that: the checking tool comprises a checking tool main body (1), wherein a mounting plate (2) is arranged at the top end of the checking tool main body (1), a cylinder (3) is fixedly mounted on the top end surface of the mounting plate (2) through a bolt, a movable rod (301) is mounted at the bottom end of the cylinder (3), the movable rod (301) is in through connection with the mounting plate (2), a tension sensor (302) is mounted at the bottom end of the movable rod (301), a hand grip mounting seat (303) is fixedly mounted at the bottom end of the tension sensor (302), a spring cover (305) is fixedly mounted at the top end surface of the hand grip mounting seat (303), a spring (306) is mounted in the spring cover (305), a first pressing block (307) and a second pressing block (308) are respectively mounted at two ends of the spring cover (305), and the first pressing block (307) and the second pressing block (308) are respectively fixedly connected, first tongs fixed plate (309) is installed to inside one side of tongs mount pad (303), second tongs fixed plate (310) is installed to the inside opposite side of tongs mount pad (303), first tongs fixed plate (309) with install limiting plate (311) between second tongs fixed plate (310), first tongs fixed plate (309) with tongs (304) are all installed to the bottom of second tongs fixed plate (310), the both sides bottom of mounting panel (2) all has support dead lever (5) through bolt fixed mounting, the bottom of supporting dead lever (5) is installed and is buckled (6).

2. The safety valve online verification tool of claim 1, wherein: the buckle (6) comprises:

the device comprises a connecting rod (601), a first hoop (602), a first rotating shaft (603), a second hoop (604), a second rotating shaft (605), a fixing pin bolt (606) and a nut (607);

connecting rod (601) with the bottom of supporting dead lever (5) runs through fixed connection, the both sides of connecting rod (601) all are equipped with the concave groove, the top of first hoop (602) is passed through first pivot (603) is installed in one side the concave inslot, the top of second hoop (604) is passed through second pivot (605) is installed at the opposite side the concave inslot, fixed plate is all installed to the bottom of first hoop (602) and second hoop (604), and passes through fixed cotter (606) will two the fixed plate is connected, the both ends threaded connection of fixed cotter (606) has nut (607).

3. The safety valve online verification tool of claim 1, wherein: the display fixing seat is characterized in that a display fixing seat (401) is fixedly mounted on one side of the top surface of the mounting plate (2) through a bolt, and a tension display (4) is mounted on the top end of the display fixing seat (401).

4. The safety valve online verification tool of claim 1, wherein: the supporting and fixing rod (5) is an electric telescopic rod.

5. The safety valve online verification tool of claim 1, wherein: the tentacles on two sides of the spring (306) are respectively overlapped with the first gripper fixing plate (309) and the second gripper fixing plate (310).

6. The safety valve online verification tool of claim 3, wherein: the calibration tool is characterized in that a storage battery and a control switch are installed on the calibration tool main body (1), the storage battery is electrically connected with the control switch, the control switch is electrically connected with the tension sensor (302) and the supporting fixing rod (5), and the tension sensor (302) is electrically connected with the tension display (4).