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CN118190592B - A detection device and detection method for pressure test buffer tank - Google Patents

A detection device and detection method for pressure test buffer tank Download PDF

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Publication number
CN118190592B
CN118190592B CN202410240881.8A CN202410240881A CN118190592B CN 118190592 B CN118190592 B CN 118190592B CN 202410240881 A CN202410240881 A CN 202410240881A CN 118190592 B CN118190592 B CN 118190592B
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hollow ball
measuring
buffer tank
tested
wall
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CN118190592A (en
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翟梁梁
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China National Chemical Engineering Third Construction Co Ltd
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China National Chemical Engineering Third Construction Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • G01N3/12Pressure testing
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

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  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The invention discloses a detection device and a detection method of a pressure test buffer tank, wherein the detection device comprises a base component and a hollow ball, wherein the base component comprises a shell, two ends of the shell are respectively connected with a first measurement component and a second measurement component, the first measurement component comprises a fitting pipe, one end of the fitting pipe is connected with the shell, the other end of the fitting pipe is provided with a movable opening, the hollow ball is positioned in the fitting pipe, the other end of the hollow ball is connected with a pull rope, and one end of the pull rope, which is far away from the hollow ball, extends into the shell and is connected with a winding measurement piece. According to the invention, after the partial size data of the pressure test buffer tank are obtained through the detection device, the maximum pressure which can be born by the pressure test buffer tank can be obtained through calculation according to a formula, so that the pressure test buffer tank is convenient for workers to reasonably prepare materials for manufacturing the pressure test buffer tank, and the manufactured pressure test buffer tank meets the requirement of subsequent working pressure.

Description

Detection device and detection method for pressure test buffer tank
Technical Field
The invention relates to the technical field of buffer tank detection, in particular to a detection device and a detection method of a pressure test buffer tank.
Background
In the later stage of engineering in the chemical construction, the process pipeline starts a water pressure or air pressure test, and because of different process technical requirements, the test pressure is different, and for the pressure test of the high-pressure or ultra-high-pressure pipeline, a buffer tank is additionally arranged between the pressure test pump and the process system to ensure the safety of the process system, so that the safety of the system is prevented from being improved by overpressure of the system, and pressure test staff is prevented from being injured.
At present, the pressure test buffer tank is manufactured by selecting materials according to personal working experience, so that the manufactured pressure test buffer tank cannot bear subsequent working pressure, and a plurality of safety accidents occur during subsequent use, and in order to improve the safety of the system, the pressure test buffer tank is characterized in that the pressure test buffer tank is provided with a pressure sensor, and the pressure sensor is used for detecting the pressure of the material for manufacturing the pressure test buffer tank.
Disclosure of Invention
The invention aims to provide a detection device and a detection method for a pressure test buffer tank, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a test device for a pressure test buffer tank, comprising:
the base assembly comprises a shell, and two ends of the shell are respectively connected with a first measuring assembly and a second measuring assembly;
wherein, measurement subassembly one includes:
One end of the assembly pipe is connected with the shell, and the other end of the assembly pipe is provided with a movable port;
The hollow ball is positioned in the assembly pipe, one end of the hollow ball is positioned in the movable port and is flush with the outer wall of the assembly pipe, the other end of the hollow ball is connected with a pull rope, one end of the pull rope, which is far away from the hollow ball, extends into the shell and is connected with a winding measuring piece, and the winding measuring piece is used for unreeling the pull rope and detecting the length of the unreeling pull rope;
The second measuring assembly comprises:
one end of the measuring frame is hinged with the shell, one side of the measuring frame is detachably provided with a fixed block, and one side of the measuring frame is also slidably provided with a movable block corresponding to the fixed block.
A further improvement is that the hollow sphere is filled with weight particles.
The further improvement is that the inner wall of the assembly pipe is provided with a guide wheel group for guiding the stay cord, and the guide wheel group is used for enabling the hollow ball to vertically move downwards when the stay cord is unreeled by the winding measuring piece.
A further improvement is that the winding measurement comprises:
the winding device is arranged in the shell, the output end of the winding device winds one end of the pull rope far away from the hollow ball, the output end of the winding device extends to the outer side of the shell and is fixedly sleeved with a pointer, one end of the pointer is positioned at the axis of the scale ring, the other end of the pointer corresponds to the scale value on the scale ring, and the scale ring is arranged on the shell.
A further improvement is that the winding measurement further comprises:
A contact part with one side provided with a bevel edge matched with the pointer, and
One end of the spring is connected with the contact part, the other end of the spring is connected with the input end of the counter, and the counter is arranged on the shell;
the contact part is pushed by the pointer to drive the spring to squeeze the counter when the pointer rotates for one circle, so that the counter counts.
The hollow ball is characterized in that a limiting block is attached to one end, connected with the pull rope, of the hollow ball, the limiting block is fixed to the inner wall of the assembly pipe, a through hole for the pull rope to pass through is formed in the limiting block, and the other end of the hollow ball is flush with the outer wall of the assembly pipe when one end of the hollow ball is attached to the limiting block.
The hollow ball winding device is characterized in that a groove is formed in one end, far away from the pull rope, of the hollow ball, a touch closing button used for controlling the winding device is arranged at the bottom of the groove, an arc pressing block is arranged on one side of the touch closing button and connected with the bottom of the groove through an elastic piece, and when the arc pressing block is contacted with the touch closing button, the outer end face of the arc pressing block and the outer wall of the hollow ball are located on the same circumferential face.
The further improvement lies in, the assembly pipe is kept away from the one end symmetry of activity mouth and is equipped with the setting element, the setting element includes:
A screw thread column arranged on the outer wall of the assembly pipe through a bearing and
The thread sleeve is sleeved on the outer wall of the thread column, the outer wall of the thread sleeve is provided with a scale rod parallel to the axis of the thread sleeve, and the scale rod movably penetrates through the outer wall of the assembly pipe and extends into the assembly pipe.
The measuring rack is characterized in that a scale plate which is horizontal to the length direction of the measuring rack is arranged on the measuring rack, a screw rod is arranged in the inner cavity of the measuring rack in a rotating mode, a driving rod is inserted into one end of the measuring rack, the driving rod is connected with one end of the screw rod through a bevel gear set in a transmission mode, one end of the movable block is sleeved on the screw rod in a threaded mode, and the other end of the movable block corresponds to the fixed block after penetrating through a through hole formed in the side wall of the measuring rack.
The detection method of the pressure test buffer tank, which utilizes the detection device, comprises the following steps:
The method comprises the steps of S1, detecting a plurality of materials to be detected in a pressure test buffer tank, measuring the outer diameter and the inner diameter of an outer ring of the materials to be detected through a measuring component II, obtaining the inner radius of the materials to be detected according to the inner diameter, extending a mounting pipe into an inner cavity of the materials to be detected from one end axle center when detecting part of the materials to be detected, then unwinding a pull rope through opening a winding measuring component, at the moment, downwards moving a hollow ball to be in contact with the inner wall at the bottom of the inner cavity of a region to be detected under the action of gravity, obtaining the inner radius of the materials to be detected by adding the outer ring radius of the mounting pipe to the length of the unwinding pull rope obtained by measuring the winding measuring component II, and measuring the outer ring outer diameter of the materials to be detected through the measuring component II;
S2, obtaining the wall thickness of the material to be detected according to the outer diameter of the outer ring of the material to be detected and the inner radius of the material to be detected;
S3, according to the formula: calculating the pressure value of the material to be detected;
The method comprises the steps of (1) calculating the thickness of a material to be detected, wherein P is the pressure, R is the internal radius of the material to be detected, t is the minimum required thickness of the material of the pressure test buffer tank, and the minimum required thickness is obtained by removing 12.5% of the negative tolerance of the pipe through the wall thickness of the pipe of the pressure test buffer tank;
and S4, taking the minimum value of the pressure values of the materials to be detected obtained by the S3 formula to obtain the maximum pressure which can be born by the pressure test buffer tank.
Compared with the prior art, the invention has the beneficial effects that:
According to the invention, the material used for manufacturing the pressure test buffer tank is measured through the detection device, partial size data of the material are obtained, and then the pressure born by the material of the pressure test buffer tank can be obtained through calculation according to a formula, wherein the minimum value of the pressure born by the material of the pressure test buffer tank is the maximum pressure born by the manufactured pressure test buffer tank, so that workers can conveniently and reasonably match the material to manufacture the pressure test buffer tank, the manufactured pressure test buffer tank meets the requirement of subsequent working pressure, the safety accident is prevented, the safety of the system is improved, and the workers are prevented from being injured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the structure A of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of a winding measuring member according to the present invention;
fig. 4 is a schematic diagram of a conventional pressure test buffer tank.
In the figure, 100 parts of a base assembly, 101 parts of a shell, 200 parts of a measuring assembly I, 201 parts of an assembling pipe, 202 parts of a movable port, 203 parts of a hollow ball, 204 parts of a counterweight particle, 205 parts of a stay cord, 206 parts of a limiting block, 207 parts of a winding device, 208 parts of a scale ring, 209 parts of a pointer, 210 parts of a counter, 211 parts of a spring, 212 parts of a contact part, 213 parts of a scale rod, 214 parts of an arc-shaped pressing block, 215 parts of a touch closing button, 216 parts of a thread column, 217 parts of a thread sleeve, 300 parts of a measuring assembly II, 301 parts of a measuring frame, 302 parts of a lead screw, 303 parts of a fixed block, 304 parts of a movable block, 305 parts of a scale plate, 306 parts of a driving rod, 400 parts of a pressure testing buffer tank main body, 401 parts of a seamless steel pipe, 402 parts of a water inlet, 403 parts of a butt welding check valve, 404 parts of a water outlet, 405 parts of a buffer tank bracket, 406 parts of a relief port, 407 parts of a safety valve, 408 parts of a pressure gauge port, 409 parts of a backup button, 410 parts of a butt welding gate valve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Please refer to fig. 1-3
The pressure test buffer tank is a detection device of the prior art, for example, as can be seen from fig. 4, the material of the pressure test buffer tank generally comprises a seamless steel pipe 401 with sealing heads at two ends and a water inlet 402 and a water outlet 404 at the axes of the two ends, a butt welding check valve 403 connected with the water inlet 402, a buffer tank bracket 405 arranged at the bottom of the seamless steel pipe 401, a discharge port 406 arranged on the outer wall of the seamless steel pipe 401, a safety valve port 407, a pressure gauge port 408, a standby port 409 and the like;
The detection device of the present application includes:
the base assembly 100 comprises a shell 101, wherein two ends of the shell 101 are respectively connected with a first measuring assembly 200 and a second measuring assembly 300;
The first measuring component 200 is mainly used for measuring the radius of an inner cavity of a material to be detected in a transverse direction in the pressure test buffer tank, such as a seamless steel pipe 401, and the second measuring component 300 can be used for measuring the outer diameter of the material to be detected in the pressure test buffer tank, and also can be used for measuring the radius of an inner cavity of a material to be detected in a vertical direction in the pressure test buffer tank, such as a relief port 406, a safety valve port 407 and the like;
Wherein, measurement assembly one 200 includes:
A fitting pipe 201, one end of the fitting pipe 201 is connected with the housing 101, and the other end is provided with a movable port 202;
Hollow ball 203, hollow ball 203 is in assembly pipe 201, and the one end of hollow ball 203 is located movable mouth 202 and flushes with the outer wall of assembly pipe 201, and the other end of hollow ball 203 is connected with stay cord 205, and the one end of stay cord 205 keeping away from hollow ball 203 extends to in the shell 101 and is connected with the coiling measuring part, and the coiling measuring part is used for unreeling stay cord 205 and detects the length of unreeling stay cord 205, and hollow ball 203 intubate is filled with weight granule 204, and assembly pipe 201 inner wall is equipped with the direction wheelset of leading stay cord 205, and the direction wheelset is including pulley and pulley axle for example, is used for making hollow ball 203 vertical downwardly moving when coiling measuring part unreels stay cord 205. For example, when measuring the inner radius of the seamless steel pipe 401, by inserting the fitting pipe 201 into the inner cavity of the seamless steel pipe 401 from the water inlet 402 or the water outlet 404 at the end of the seamless steel pipe 401 and making the hollow ball 203 downward, unwinding the pull rope 205 by winding the measuring member, at which time the hollow ball 203 pulls the pull rope 205 by the gravity thereof until it contacts the bottom inner wall of the seamless steel pipe 401, at which time the unwinding length of the pull rope 205 plus the outer radius of the fitting pipe 201 gives the inner radius of the seamless steel pipe 401, the inner radius value x2 gives the inner diameter.
The second measuring assembly 300 includes:
One end of the measuring frame 301 is hinged with the shell 101, so that the measuring frame 301 is convenient to fold and fold when not in use, a fixed block 303 is detachably arranged on one side of the measuring frame 301, for example, a bolt fixing mode is adopted, a movable block 304 corresponding to the fixed block 303 is also arranged on one side of the measuring frame 301 in a sliding manner, when the outer diameter of the outer ring of the material to be detected is measured, the fixed block 303 and the movable block 304 are respectively contacted with two opposite outer walls of the material to be detected, at the moment, the distance between the fixed block 303 and the movable block 304 is the outer diameter of the outer ring of the material to be detected, when the inner radius of the material to be detected is measured, the fixed block 303 and the movable block 304 are respectively contacted with two opposite inner walls of the material to be detected, at the moment, the inner diameter of the material to be detected is obtained by adding the widths of the fixed block 303 and the movable block 304 to the inner diameter;
The measuring frame 301 is provided with a scale plate 305 which is horizontal to the length direction of the measuring frame so as to know the distance between the fixed block 303 and the movable block 304, the inner cavity of the measuring frame 301 is rotationally provided with a lead screw 302, the lead screw 302 is parallel to the length direction of the measuring frame 301, one end of the measuring frame 301 is inserted with a driving rod 306, the driving rod 306 is T-shaped, a bearing is arranged at the joint of the driving rod 306 and the measuring frame 301 so as to be manually rotated by a user, one end of the driving rod 306 and one end of the lead screw 302 are in transmission connection through a bevel gear set, the bevel gear set is two sets of bevel gears which are meshed, one end of the movable block 304 is in threaded sleeve on the lead screw 302, the other end of the movable block 304 corresponds to the fixed block 303 after penetrating through a through hole formed in the side wall of the measuring frame 301, and the driving rod 306 is rotated so that the lead screw 302 rotates through the bevel gear set to change the distance between the fixed block 303 and the movable block 304.
Preferably, the winding measuring member of the present embodiment includes:
The winding device 207 is arranged in the shell 101, the output end of the winding device 207 winds one end of the pull rope 205 far away from the hollow ball 203, the output end of the winding device 207 extends to the outer side of the shell 101 and is fixedly sleeved with a pointer 209, one end of the pointer 209 is positioned at the axis of the scale ring 208, the other end corresponds to the scale value on the scale ring 208, and the scale ring 208 is arranged on the shell 101.
The winding device 207 includes, for example, a servo motor, a speed reducer, and a roller body, the roller body is driven to rotate by the servo motor and the speed reducer, so that the winding pull rope 205 or the unwinding pull rope 205 can be wound, the scale ring 208 is an annular part with scale values, the pointer 209 rotates synchronously when the roller body unwinds the pull rope 205, the unwinding length of the pull rope 205 is obtained by subtracting the value of the pointer 209 corresponding to the scale ring 208 from the value of the pointer 209 corresponding to the scale ring 208 at the beginning after unwinding, for example, the value of the pointer 209 corresponding to the scale ring 208 at the beginning is 0, the value of the pointer 209 corresponding to the scale ring 208 after unwinding is 20, and the length of the unwinding pull rope 205 is 20.
Preferably, the winding measuring member of the present embodiment further includes:
A contact portion 212 having a bevel edge on one side thereof for mating with the pointer 209, and as can be seen from FIG. 3, the end of the pointer 209 also has a bevel edge for mating with the bevel edge on the contact portion 212, and
A spring 211 having one end connected to the contact portion 212 and the other end connected to the input end of the counter 210;
The contact portion 212 is pushed by the pointer 209 to drive the spring 211 to press the counter 210 when the pointer 209 rotates one turn, so that the counter 210 counts, for example, when the counter 210 displays 3, the pointer 209 rotates 3 turns, the number of the scale ring 208 is 20 one turn, and the length of the unwinding rope 205 is 3×20+5 when the pointer 208 points to the number 5 after rotating 3 turns.
As a preferred embodiment, a limiting block 206 is attached to one end of the hollow ball 203 connected with the pull rope 205, the limiting block 206 is fixed on the inner wall of the assembly pipe 201, a through hole for the pull rope 205 to pass through is formed in the limiting block 206, and when one end of the hollow ball 203 is attached to the limiting block 206, the other end of the hollow ball is flush with the outer wall of the assembly pipe 201, so that the accuracy of the obtained measurement value is ensured.
As a preferred embodiment, a groove is formed at one end of the hollow ball 203 far away from the pull rope 205, a touch closing button 215 for controlling the winding device 207 is arranged at the groove bottom, an arc pressing block 214 is arranged at one side of the touch closing button 215, the arc pressing block 214 is connected with the groove bottom through an elastic piece, and when the arc pressing block 214 contacts with the touch closing button 215, the outer end face of the arc pressing block 214 and the outer wall of the hollow ball 203 are positioned on the same circumferential face. The hollow ball 203 is firstly contacted with the inner wall of the bottom of the inner cavity of the material to be detected downwards through the arc pressing block 214, under the action of gravity of the hollow ball 203, the arc pressing block 214 presses the elastic piece to be contacted with the touch closing button 215, and at the moment, the touch closing button 215 enables the winding device 207 to stop unwinding the pull rope 205.
Preferably, the end of the assembly tube 201 far away from the movable port 202 of the present embodiment is symmetrically provided with positioning members, and the positioning members include:
a screw column 216 arranged on the outer wall of the assembly pipe 201 through a bearing, and
The threaded sleeve 217 is sleeved on the outer wall of the threaded column 216, the outer wall of the threaded sleeve 217 is provided with a scale rod 213 parallel to the axis of the scale rod 213, the scale rod 213 movably penetrates through the outer wall of the assembly pipe 201 and extends into the assembly pipe 201, the threaded sleeve 217 is enabled to move to be closely attached to the inner wall of a material to be detected by rotating the threaded column 216, meanwhile, the scale rod 213 is observed, when the upper scale rod 213 and the lower scale rod 213 are the same in value, namely the assembly pipe 201 is positioned at the axis of the material to be detected, for example, the assembly pipe 201 is inserted into the inner cavity of the seamless steel pipe 401 from the water inlet 402, the outer end of the threaded sleeve 217 is enabled to be closely attached to the inner wall of the water inlet 402 by rotating the threaded sleeve 217, and the assembly pipe 201 is adjusted to be positioned at the axis of the water inlet 402.
The detection method of the pressure test buffer tank, which utilizes the detection device, comprises the following steps:
The method comprises the steps of S1, detecting a plurality of materials to be detected in a pressure test buffer tank, measuring the outer diameter and the inner diameter of an outer ring of the materials to be detected through a second measuring component 300 during detection, obtaining the inner radius of the materials to be detected according to the inner diameter, extending an assembly pipe 201 into an inner cavity of the materials to be detected from one end axle center of the materials to be detected during detection, then opening a winding measuring component unwinding rope 205, enabling a hollow ball 203 to move downwards under the action of gravity to contact with the inner wall at the bottom of the inner cavity of the materials to be detected, adding the outer ring radius of the assembly pipe 201 to the length of the unwinding rope 205 measured by the winding measuring component, and measuring the outer ring diameter of the materials to be detected through the second measuring component 300;
S2, obtaining the wall thickness of the material to be detected according to the outer diameter of the outer ring of the material to be detected and the inner radius of the material to be detected, for example, obtaining the inner diameter of the material to be detected by the inner radius multiplied by 2 of the material to be detected, and obtaining the wall thickness of the material to be detected by the outer diameter of the outer ring of the material to be detected and the inner diameter of the material to be detected by the ratio of 2;
S3, according to the formula: calculating the pressure value of the material to be detected;
The method comprises the steps of (1) calculating the thickness of a material to be detected, wherein P is the pressure, R is the internal radius of the material to be detected, t is the minimum required thickness of the material of the pressure test buffer tank, and the minimum required thickness is obtained by removing 12.5% of the negative tolerance of the pipe through the wall thickness of the pipe of the pressure test buffer tank;
It should be noted that this formula is obtained from ASME SECTION VIII-DIVISION 1 (ASME section VIII-section 1) and UG-27 Thickness of Shells Under Internal Pressure (thickness of the case under the action of internal pressure of UG-27);
and S4, taking the minimum value of the pressure values of the materials to be detected obtained by the S3 formula to obtain the maximum pressure which can be born by the pressure test buffer tank.
The following examples are given:
the buffer tank body is made of a material A106B with a pipe diameter of 3inch and a wall thickness XXS, and has a diameter of 88.9mm and a wall thickness of 15.24mm;
r, the inner radius of the steel pipe is 88.9/2-15.24=29.21 mm;
t is 15.24 times (1-12.5%) of minimum required thickness of the pressure test buffer tank material (13.335 is approximately 13.34 mm);
S, checking a specification ASME SEC II PART D Table 1A at the maximum allowable stress working temperature of 35 ℃, and calculating the allowable stress 17100psi,17100/14.5 approximately 1180bar;
e, welding joint coefficient (1 for butt welding joint);
According to the formula Calculating the pressure value, resulting in p= 443.68bar;
The method can calculate the bearable pressure of the buffer tank body, the buffer tank branch pipe, the buffer tank end socket and the buffer tank pipe table. Other part structures in the buffer tank, such as a buffer tank gate valve and a buffer tank check valve, can directly calculate the bearable pressure according to the sealing pressure;
Comparing the pressure born by the materials, and taking the minimum value as the maximum pressure born by the buffer tank.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1.一种试压缓冲罐的检测装置,其特征在于,包括:1. A detection device for a pressure test buffer tank, characterized in that it comprises: 基础组件(100),包括外壳(101),所述外壳(101)的两端分别连接有测量组件一(200)和测量组件二(300);A basic component (100) comprises a housing (101), wherein two ends of the housing (101) are respectively connected to a measuring component 1 (200) and a measuring component 2 (300); 其中,所述测量组件一(200)包括:Wherein, the measurement component 1 (200) comprises: 装配管(201),所述装配管(201)的一端连接外壳(101),另一端底部开设有开口朝下的活动口(202);An assembly tube (201), one end of the assembly tube (201) is connected to the housing (101), and the bottom of the other end is provided with a movable opening (202) opening downward; 空心球(203),空心球(203)处于装配管(201)内,所述空心球(203)另一端连接有拉绳(205),所述拉绳(205)远离空心球(203)的一端延伸至外壳(101)内并连接有卷绕测量件,所述卷绕测量件用于放卷拉绳(205)并检测放卷拉绳(205)的长度;A hollow ball (203), the hollow ball (203) is in the assembly tube (201), the other end of the hollow ball (203) is connected to a drawstring (205), one end of the drawstring (205) away from the hollow ball (203) extends into the housing (101) and is connected to a winding measuring piece, the winding measuring piece is used to unwind the drawstring (205) and detect the length of the unwinding drawstring (205); 所述测量组件二(300)包括:The second measuring component (300) comprises: 测量架(301),一端与外壳(101)铰接,所述测量架(301)的一侧可拆卸设有固定块(303),所述测量架(301)的一侧还滑动设有与固定块(303)对应的活动块(304);A measuring frame (301) is hinged at one end to the housing (101), a fixed block (303) is detachably provided on one side of the measuring frame (301), and a movable block (304) corresponding to the fixed block (303) is slidably provided on one side of the measuring frame (301); 所述空心球(203)内填充有配重颗粒(204),且空心球(203)的一端位于活动口(202)内并与装配管(201)的外壁齐平;The hollow ball (203) is filled with weight particles (204), and one end of the hollow ball (203) is located in the movable opening (202) and is flush with the outer wall of the assembly tube (201); 在对部分待检测材料检测时,将所述装配管(201)从其一端轴心伸入至其内腔,随后通过打开卷绕测量件放卷拉绳(205),此时空心球(203)在重力的作用下向下移动与待检测区域内腔的底部内壁接触,将卷绕测量件测量得到的放卷拉绳(205)的长度加上装配管(201)的外圈半径即得到该待检测材料的内部半径。When testing a portion of the material to be tested, the assembly tube (201) is extended from the axis of one end thereof into its inner cavity, and then the unwinding rope (205) is unwound by opening the winding measuring piece. At this time, the hollow ball (203) moves downward under the action of gravity and contacts the bottom inner wall of the inner cavity of the area to be tested. The length of the unwinding rope (205) measured by the winding measuring piece is added to the outer circle radius of the assembly tube (201) to obtain the inner radius of the material to be tested. 2.根据权利要求1所述的检测装置,其特征在于:所述装配管(201)内壁设有对拉绳(205)导向的导向轮组,用于在卷绕测量件放卷拉绳(205)时使得空心球(203)竖直向下移动。2. The detection device according to claim 1 is characterized in that: the inner wall of the assembly tube (201) is provided with a guide wheel group for guiding the pull rope (205), which is used to make the hollow ball (203) move vertically downward when the pull rope (205) is wound and unwound on the measuring piece. 3.根据权利要求1所述的检测装置,其特征在于:所述卷绕测量件包括:3. The detection device according to claim 1, characterized in that: the winding measuring member comprises: 卷绕装置(207),设于外壳(101)内,所述卷绕装置(207)的输出端卷绕拉绳(205)远离空心球(203)的一端,所述卷绕装置(207)的输出端延伸至外壳(101)外侧并固定套设有指针(209),所述指针(209)的一端位于刻度环(208)的轴心,另一端与刻度环(208)上的刻度值对应,所述刻度环(208)设于外壳(101)上。A winding device (207) is arranged in the housing (101); the output end of the winding device (207) is wound around one end of the pull rope (205) away from the hollow ball (203); the output end of the winding device (207) extends to the outside of the housing (101) and is fixedly sleeved with a pointer (209); one end of the pointer (209) is located at the axis of a scale ring (208), and the other end corresponds to a scale value on the scale ring (208); and the scale ring (208) is arranged on the housing (101). 4.根据权利要求3所述的检测装置,其特征在于:所述卷绕测量件还包括:4. The detection device according to claim 3, characterized in that: the winding measuring member further comprises: 接触部(212),其一侧设有与指针(209)配合的斜边;以及,a contact portion (212) having a beveled edge on one side thereof for cooperating with the pointer (209); and, 弹簧(211),一端连接接触部(212),另一端连接计数器(210)的输入端,所述计数器(210)设于外壳(101)上;A spring (211), one end of which is connected to the contact portion (212), and the other end of which is connected to an input end of a counter (210), wherein the counter (210) is disposed on the housing (101); 所述接触部(212)在指针(209)旋转一圈时被指针(209)顶动驱使弹簧(211)挤压计数器(210),使得计数器(210)进行计数。When the pointer (209) rotates one circle, the contact portion (212) is pushed by the pointer (209) to drive the spring (211) to press the counter (210), so that the counter (210) can count. 5.根据权利要求4所述的检测装置,其特征在于:所述空心球(203)与拉绳(205)连接的一端贴合有限位块(206),所述限位块(206)固定在装配管(201)内壁,所述限位块(206)上开设有供拉绳(205)穿过的通口,所述空心球(203)一端与限位块(206)贴合时,其另一端与装配管(201)的外壁齐平。5. The detection device according to claim 4 is characterized in that: one end of the hollow ball (203) connected to the pull rope (205) is in contact with a limit block (206), the limit block (206) is fixed to the inner wall of the assembly tube (201), and a through hole is opened on the limit block (206) for the pull rope (205) to pass through. When one end of the hollow ball (203) is in contact with the limit block (206), the other end thereof is flush with the outer wall of the assembly tube (201). 6.根据权利要求5所述的检测装置,其特征在于:所述空心球(203)远离拉绳(205)的一端开设有凹槽,所述凹槽槽底设有用于控制卷绕装置(207)的触碰关闭按钮(215),所述触碰关闭按钮(215)的一侧设有弧形压块(214),所述弧形压块(214)通过弹性件与凹槽槽底连接,所述弧形压块(214)与触碰关闭按钮(215)接触时,所述弧形压块(214)的外端面与空心球(203)的外壁处于同一圆周面。6. The detection device according to claim 5 is characterized in that: a groove is provided at one end of the hollow ball (203) away from the pull rope (205), and a touch-off button (215) for controlling the winding device (207) is provided at the bottom of the groove, and an arc-shaped pressure block (214) is provided on one side of the touch-off button (215), and the arc-shaped pressure block (214) is connected to the bottom of the groove through an elastic member, and when the arc-shaped pressure block (214) contacts the touch-off button (215), the outer end surface of the arc-shaped pressure block (214) and the outer wall of the hollow ball (203) are on the same circumferential surface. 7.根据权利要求1所述的检测装置,其特征在于:所述装配管(201)远离活动口(202)的一端对称设有定位件,所述定位件包括:7. The detection device according to claim 1, characterized in that: a positioning member is symmetrically provided at one end of the assembly tube (201) away from the movable opening (202), and the positioning member comprises: 螺纹柱(216),通过轴承设于装配管(201)外壁;以及,A threaded column (216) is disposed on the outer wall of the assembly tube (201) via a bearing; and 螺纹套筒(217),螺纹套设于螺纹柱(216)外壁,所述螺纹套筒(217)外壁设有与其轴线平行的刻度杆(213),所述刻度杆(213)活动贯穿装配管(201)外壁并延伸至装配管(201)内。A threaded sleeve (217) is threadedly sleeved on the outer wall of the threaded column (216); the outer wall of the threaded sleeve (217) is provided with a scale rod (213) parallel to its axis; the scale rod (213) movably penetrates the outer wall of the assembly tube (201) and extends into the assembly tube (201). 8.根据权利要求1所述的检测装置,其特征在于:所述测量架(301)上设有与其长度方向水平的刻度板(305),所述测量架(301)内腔转动设有丝杠(302),所述测量架(301)的一端插设有驱动杆(306),所述驱动杆(306)与丝杠(302)的一端通过锥齿轮组传动连接,所述活动块(304)一端螺纹套设于丝杠(302)上,另一端穿过测量架(301)侧壁开设的通口后与固定块(303)对应。8. The detection device according to claim 1 is characterized in that: a scale plate (305) horizontal to the length direction of the measuring frame (301) is provided on the measuring frame (301), a lead screw (302) is rotatably provided in the inner cavity of the measuring frame (301), a driving rod (306) is inserted into one end of the measuring frame (301), the driving rod (306) and one end of the lead screw (302) are connected by a bevel gear set, one end of the movable block (304) is threadedly sleeved on the lead screw (302), and the other end passes through a through opening opened in the side wall of the measuring frame (301) and corresponds to the fixed block (303). 9.一种试压缓冲罐的检测方法,利用权利要求1-8任一项所述的检测装置,其特征在于:包括以下步骤:9. A method for detecting a pressure test buffer tank, using the detection device according to any one of claims 1 to 8, characterized in that it comprises the following steps: S1:对试压缓冲罐中的多个待检测材料进行检测,检测时通过测量组件二(300)测量出待检测材料的外圈外径以及内部直径,根据内部直径得到待检测材料的内部半径;在对部分待检测材料检测时,将装配管(201)从其一端轴心伸入至其内腔,随后通过打开卷绕测量件放卷拉绳(205),此时空心球(203)在重力的作用下向下移动与待检测区域内腔的底部内壁接触,将卷绕测量件测量得到的放卷拉绳(205)的长度加上装配管(201)的外圈半径即得到该待检测材料的内部半径,再通过测量组件二(300)测量该待检测材料的外圈外径;S1: Testing multiple materials to be tested in the pressure test buffer tank. During the testing, the outer diameter and the inner diameter of the outer ring of the material to be tested are measured by the second measuring component (300), and the inner radius of the material to be tested is obtained according to the inner diameter; when testing some of the materials to be tested, the assembly tube (201) is extended from the axis of one end into the inner cavity thereof, and then the unwinding rope (205) of the winding measuring piece is opened. At this time, the hollow ball (203) moves downward under the action of gravity and contacts the bottom inner wall of the inner cavity of the area to be tested. The length of the unwinding rope (205) measured by the winding measuring piece is added to the outer ring radius of the assembly tube (201) to obtain the inner radius of the material to be tested, and then the outer diameter of the outer ring of the material to be tested is measured by the second measuring component (300); S2:根据待检测材料的外圈外径以及待检测材料的内部半径得到待检测材料的壁厚;S2: Obtain the wall thickness of the material to be tested according to the outer diameter of the outer ring of the material to be tested and the inner radius of the material to be tested; S3:根据公式:计算待检测材料压力数值;S3: According to the formula: Calculate the pressure value of the material to be tested; 其中P为压力;R为待检测材料内部半径,t为试压缓冲罐材料的最小要求厚度,该最小要求厚度通过试压缓冲罐管材壁厚去除管材负公差的12.5%计算得到;S为最大许用应力;E为焊接接头系数,对焊接头取1;Where P is the pressure; R is the internal radius of the material to be tested; t is the minimum required thickness of the pressure test buffer tank material, which is calculated by subtracting 12.5% of the negative tolerance of the pipe from the wall thickness of the pressure test buffer tank pipe; S is the maximum allowable stress; E is the weld joint coefficient, which is 1 for weld joints; S4:对S3公式得到的多个待检测材料压力数值取最小值得到试压缓冲罐能承受的最大压力。S4: Take the minimum value of the multiple pressure values of the materials to be tested obtained by formula S3 to obtain the maximum pressure that the pressure test buffer tank can withstand.
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