CN110057683A - A kind of prestress pipe external pressure loading detection device of 3 stress - Google Patents
A kind of prestress pipe external pressure loading detection device of 3 stress Download PDFInfo
- Publication number
- CN110057683A CN110057683A CN201910370880.4A CN201910370880A CN110057683A CN 110057683 A CN110057683 A CN 110057683A CN 201910370880 A CN201910370880 A CN 201910370880A CN 110057683 A CN110057683 A CN 110057683A
- Authority
- CN
- China
- Prior art keywords
- fixing seat
- detection device
- external pressure
- main body
- pressure loading
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0274—Tubular or ring-shaped specimens
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
Landscapes
- 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)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of prestress pipe external pressure loading detection devices of 3 stress, are related to pipe testing apparatus technical field;Including main body, the main body upper end is provided with connecting rod, pressure sensing is provided on the connecting rod, the connecting rod bottom is fixedly installed crossbeam, the crossbeam bottom is provided with the briquetting machine for suppressing steel pipe, the briquetting machine bottom is provided with the clamping device for being clamped to steel pipe, the clamping device includes the first fixing seat and the second fixing seat being equipped with, first fixing seat and the sliding of the second fixing seat are located at bottom part body, first fixing seat bottom is fixedly installed first movement block, second fixing seat bottom is fixedly installed the second movable block.The present invention is suitable for the pipe detection of different size, easy to operate.
Description
Technical field
The present invention relates to pipe testing apparatus technical field, the prestress pipe external pressure load of specifically a kind of 3 stress
Detection device.
Background technique
Pipeline is connected into pipe, pipe connector and valve etc. for conveying gas, liquid or with solid particle
Fluid device.In general, fluid flows to low pressure from the high pressure of pipeline after the pressurization such as air blower, compressor, pump and boiler
The pressure or gravity conveying of fluid itself can also be used in place.Having many uses for pipeline is general, be used primarily in water supply, draining, heat supply,
It gives gas, in long distance delivery oil and natural gas, agricultural irrigation, hydraulic engineering and various commercial plants.
Pipeline needs to carry out it outer compressive load inspection in use, and in the prior art detection different tube diameters into
When row detection, need to replace pipeline clamping device, the operation efficiency is low, large labor intensity, it is therefore desirable to design
A kind of pipeline external pressure loading detection device convenient for detecting different tube diameters.
Summary of the invention
The purpose of the present invention is to provide a kind of prestress pipe external pressure loading detection devices of 3 stress, on solving
State the problem of proposing in background technique.
To achieve the above object, the invention provides the following technical scheme:
A kind of prestress pipe external pressure loading detection device of 3 stress, including main body, the main body upper end are provided with connecting rod,
Pressure sensing is provided on the connecting rod, the connecting rod bottom is fixedly installed crossbeam, and the crossbeam bottom is provided with for pressing
The briquetting machine of steel pipe processed, the briquetting machine bottom are provided with the clamping device for being clamped to steel pipe, the clamping
Mechanism includes the first fixing seat and the second fixing seat being equipped with, and first fixing seat and the sliding of the second fixing seat are located at master
Body bottom, first fixing seat bottom are fixedly installed first movement block, and second fixing seat bottom is fixedly installed
Two movable blocks, the first movement block are arranged on the first driving portion on lead screw, the external screw thread on first driving portion with
Threaded hole on first movement block cooperates, the external screw thread of the second driving portion on internal screw thread and lead screw on second movable block
Cooperation, second driving portion and the first driving portion both ends thread rotary orientation are on the contrary, be provided with rotating mechanism on the lead screw.
As a further solution of the present invention: the briquetting machine includes the hydraulic cylinder for being fixed at crossbeam bottom, institute
It states hydraulic cylinder bottom and is fixedly installed wedge.
As further scheme of the invention: the wedge is arc setting.
As the present invention further scheme: the lead screw is rotatably arranged on bottom part body, the first movement block and
Second movable block bottom is provided with sliding block, and the sliding block sliding is set on the chute, and the sliding slot is arranged in main body.
As further scheme of the invention: the rotating mechanism includes the first tooth for being fixed at lead screw end
Wheel, the first gear are engaged with second gear, and the output end of motor is arranged in the second gear.
As further scheme of the invention: the rotating mechanism further includes protective cover.
As further scheme of the invention: being additionally provided with display instrument and controller in the main body, the pressure passes
Sense, display instrument and rotating mechanism are electrically connected with the controller.
Compared with prior art, the beneficial effects of the present invention are: the steel pipe thickness detected as needed is solid to adjust first
The distance between reservation and the second fixing seat, controller control motor rotation, and motor passes through, second gear, lead screw, first movement
Block and the second movable block drive the first fixing seat and the second fixing seat mobile, and steel pipe is placed on the first fixing seat after adjustment
With the second fixing seat, which is convenient for the pipeline for meeting different size to be detected, and controller control hydraulic cylinder moves downward pressure
Seat suppresses steel pipe, and pressure is reached display instrument by pressure sensing, facilitates observation detection pressure size, and wedge sets for arc
It sets, is set as arc convenient for compacting steel pipe, keeps stablizing;The present invention is suitable for the pipe detection of different size, easy to operate.
Detailed description of the invention
Fig. 1 is the first structure diagram of the prestress pipe external pressure loading detection device of 3 stress.
Fig. 2 is the second structural schematic diagram of the prestress pipe external pressure loading detection device of 3 stress.
Fig. 3 is the structural schematic diagram of lead screw in the prestress pipe external pressure loading detection device of 3 stress.
In figure: main body -1, connecting rod -2, pressure sensing -3, crossbeam -4, hydraulic cylinder -5, wedge -6, the first fixing seat -7,
Two fixing seats -8, the second movable block -10, lead screw -11, the first driving portion -12, the second driving portion -13, turn first movement block -9
Motivation structure -14, first gear -15, motor -16, second gear -17, sliding slot -18, sliding block -19, display instrument -20, controller -
21。
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
Please refer to Fig. 1~3, in the embodiment of the present invention 1, a kind of prestress pipe external pressure loading detection device of 3 stress, packet
Main body 1 is included, 1 upper end of main body is provided with connecting rod 2, the pressure sensing 3 for showing pressure, institute are provided on the connecting rod 2
It states 2 bottom of connecting rod and is fixedly installed crossbeam 4,4 bottom of crossbeam is provided with the briquetting machine for suppressing steel pipe.
Preferably, briquetting machine described in the embodiment of the present invention includes the hydraulic cylinder 5 for being fixed at 4 bottom of crossbeam, institute
It states 5 bottom of hydraulic cylinder and is fixedly installed wedge 6, the wedge 6 is arc setting, is set as arc convenient for compacting steel pipe, keeps
Stablize.
Since the prior art needs replacing clamp system in testing different pipelines, the operation is more troublesome, therefore described
Briquetting machine bottom is provided with the clamping device for being clamped to steel pipe, and the clamping device includes first be equipped with
Fixing seat 7 and the second fixing seat 8, first fixing seat 7 and the sliding of the second fixing seat 8 are located at 1 bottom of main body, and described first is solid
7 bottom of reservation is fixedly installed first movement block 9, and 8 bottom of the second fixing seat is fixedly installed the second movable block 10, described
First movement block 9 is arranged on the first driving portion 12 on lead screw 11, and the external screw thread and first on first driving portion 12 move
Threaded hole on motion block 9 cooperates, the outer spiral shell of the second driving portion 13 on internal screw thread and lead screw 11 on second movable block 10
Line cooperation, second driving portion 13 and 12 both ends thread rotary orientation of the first driving portion are opposite.
The lead screw 11 is rotatably arranged on 1 bottom of main body, and the first movement block 9 and 10 bottom of the second movable block are respectively provided with
There is sliding block 19, the sliding of sliding block 19 is located on sliding slot 18, and the setting of sliding slot 18 on the body 1, is arranged on the lead screw 11
There is rotating mechanism 14.
The setting drives lead screw 11 to rotate by rotating mechanism 14, and lead screw 11 passes through the first driving portion 12 and the second driving portion
13 the first fixing seats 7 of driving and the second fixing seat 8 move toward one another or back movement adjusts the first fixing seat 7 and the second fixing seat 8
The distance between, convenient for meeting the testing requirement of different size pipeline.
Embodiment 2
Please refer to Fig. 1~3, the main distinction of the present embodiment 2 and embodiment 1 is that the rotating mechanism 14 includes being fixed at
The first gear 15 of 11 end of lead screw, the first gear 15 are engaged with second gear 17, and the second gear 17 is arranged in electricity
The output end of machine 16, the rotating mechanism 14 further includes protective cover, which is convenient for providing power for the rotation of lead screw 11.
Display instrument 20 and controller 21 are additionally provided in the main body 1, the display instrument 20 is for showing that pressure sensing 3 is held
The pressure received, the pressure sensing 3, display instrument 20 and rotating mechanism 14 are electrically connected with controller 21.
The working principle of the invention is:
The steel pipe thickness detected as needed adjusts the distance between the first fixing seat 7 and the second fixing seat 8, and controller 21 controls
Motor 16 processed rotates, and motor 16 passes through 15, second gear 17, lead screw 11, first movement block 9 and the second movable block 10 driving first
Fixing seat 7 and the second fixing seat 8 are mobile, steel pipe are placed on the first fixing seat 7 and the second fixing seat 8 after adjustment, this sets
It sets convenient for meeting the pipeline of different size and being detected, the control hydraulic cylinder 5 of controller 21 moves downward wedge 6 and presses steel pipe
Pressure is reached display instrument 20 by system, pressure sensing 3, facilitates observation detection pressure size, and wedge 6 is arc setting, is set as arc
Shape keeps stablizing convenient for compacting steel pipe;The present invention is suitable for the pipe detection of different size, easy to operate.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "top", "bottom",
The orientation or positional relationship of the instructions such as "inner", "outside", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.As a result, in the description of the present invention, unless otherwise saying
Bright, the meaning of " plurality " is two or more.The feature for defining " first ", " second " etc. can be expressed or impliedly
Including one or more of the features.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (7)
1. a kind of prestress pipe external pressure loading detection device of 3 stress, including main body (1), main body (1) upper end are set
It being equipped with connecting rod (2), is provided with pressure sensing (3) on the connecting rod (2), connecting rod (2) bottom is fixedly installed crossbeam (4),
Crossbeam (4) bottom is provided with the briquetting machine for suppressing steel pipe, and the briquetting machine bottom is provided with for steel pipe
The clamping device clamped, which is characterized in that the clamping device includes that the first fixing seat (7) being equipped with and second are solid
Reservation (8), first fixing seat (7) and the second fixing seat (8) sliding are located at main body (1) bottom, first fixing seat (7)
Bottom is fixedly installed first movement block (9), and the second fixing seat (8) bottom is fixedly installed the second movable block (10), institute
State outer spiral shell of first movement block (9) setting on the first driving portion (12) on lead screw (11), on first driving portion (12)
Threaded hole on line and first movement block (9) cooperates, and the on the internal screw thread and lead screw (11) on second movable block (10)
The external screw threads of two driving portions (13) cooperates, second driving portion (13) and the first driving portion (12) both ends thread rotary orientation on the contrary,
Rotating mechanism (14) are provided on the lead screw (11).
2. the prestress pipe external pressure loading detection device of 3 stress according to claim 1, which is characterized in that described
Briquetting machine includes the hydraulic cylinder (5) for being fixed at crossbeam (4) bottom, and hydraulic cylinder (5) bottom is fixedly installed wedge
(6).
3. the prestress pipe external pressure loading detection device of 3 stress according to claim 2, which is characterized in that described
Wedge (6) is arc setting.
4. the prestress pipe external pressure loading detection device of 3 stress according to claim 1, which is characterized in that described
Lead screw (11) is rotatably arranged on main body (1) bottom, and the first movement block (9) and the second movable block (10) bottom are provided with cunning
Block (19), sliding block (19) sliding are located on sliding slot (18), and the sliding slot (18) is arranged on main body (1).
5. the prestress pipe external pressure loading detection device of 3 stress according to claim 4, which is characterized in that described
Rotating mechanism (14) includes the first gear (15) for being fixed at lead screw (11) end, the first gear (15) and the second tooth
Take turns (17) engagement, output end of second gear (17) setting in motor (16).
6. the prestress pipe external pressure loading detection device of 3 stress according to claim 5, which is characterized in that described
Rotating mechanism (14) further includes protective cover.
7. the prestress pipe external pressure loading detection device of -6 any 3 stress, feature exist according to claim 1
In being additionally provided with display instrument (20) and controller (21) on the main body (1), the pressure sensing (3), display instrument (20) and turn
Motivation structure (14) is electrically connected with controller (21).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910370880.4A CN110057683A (en) | 2019-05-06 | 2019-05-06 | A kind of prestress pipe external pressure loading detection device of 3 stress |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910370880.4A CN110057683A (en) | 2019-05-06 | 2019-05-06 | A kind of prestress pipe external pressure loading detection device of 3 stress |
Publications (1)
Publication Number | Publication Date |
---|---|
CN110057683A true CN110057683A (en) | 2019-07-26 |
Family
ID=67322202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910370880.4A Pending CN110057683A (en) | 2019-05-06 | 2019-05-06 | A kind of prestress pipe external pressure loading detection device of 3 stress |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110057683A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111141615A (en) * | 2020-01-03 | 2020-05-12 | 中国石油集团川庆钻探工程有限公司 | External pressure crushing device |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202433263U (en) * | 2012-02-15 | 2012-09-12 | 西安三维应力工程技术有限公司 | Full-size bending load mechanical testing machine |
CN202814806U (en) * | 2012-10-29 | 2013-03-20 | 浙江巨龙管业股份有限公司 | Concrete pipe external pressure load testing device |
CN105571808A (en) * | 2016-02-26 | 2016-05-11 | 浙江理工大学 | Clamp with all-freedom constraints for impact fatigue testing machine |
CN206020172U (en) * | 2016-08-31 | 2017-03-15 | 嘉兴市叁壹工程检测有限公司 | A kind of compression strength of concrete test parts detection means |
CN206057083U (en) * | 2016-10-12 | 2017-03-29 | 广西玉柴机器股份有限公司 | A kind of sample holder frock of microhardness testers |
CN207600849U (en) * | 2017-12-07 | 2018-07-10 | 吕琪 | A kind of three-point bending test device |
CN208076308U (en) * | 2018-03-10 | 2018-11-09 | 台州市椒江建设工程质量检测中心有限公司 | A kind of pile pile beam test device |
CN108871750A (en) * | 2018-06-27 | 2018-11-23 | 芜湖衡西微量计量科技有限公司 | A kind of structural steel compressive resistance detection device |
CN208383623U (en) * | 2018-07-04 | 2019-01-15 | 天津畅意科技股份有限公司 | A kind of automotive seat pipe fitting intensity detecting device |
CN208420567U (en) * | 2018-07-19 | 2019-01-22 | 吕琪 | A kind of self-adjusting three-point bending test device |
-
2019
- 2019-05-06 CN CN201910370880.4A patent/CN110057683A/en active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202433263U (en) * | 2012-02-15 | 2012-09-12 | 西安三维应力工程技术有限公司 | Full-size bending load mechanical testing machine |
CN202814806U (en) * | 2012-10-29 | 2013-03-20 | 浙江巨龙管业股份有限公司 | Concrete pipe external pressure load testing device |
CN105571808A (en) * | 2016-02-26 | 2016-05-11 | 浙江理工大学 | Clamp with all-freedom constraints for impact fatigue testing machine |
CN206020172U (en) * | 2016-08-31 | 2017-03-15 | 嘉兴市叁壹工程检测有限公司 | A kind of compression strength of concrete test parts detection means |
CN206057083U (en) * | 2016-10-12 | 2017-03-29 | 广西玉柴机器股份有限公司 | A kind of sample holder frock of microhardness testers |
CN207600849U (en) * | 2017-12-07 | 2018-07-10 | 吕琪 | A kind of three-point bending test device |
CN208076308U (en) * | 2018-03-10 | 2018-11-09 | 台州市椒江建设工程质量检测中心有限公司 | A kind of pile pile beam test device |
CN108871750A (en) * | 2018-06-27 | 2018-11-23 | 芜湖衡西微量计量科技有限公司 | A kind of structural steel compressive resistance detection device |
CN208383623U (en) * | 2018-07-04 | 2019-01-15 | 天津畅意科技股份有限公司 | A kind of automotive seat pipe fitting intensity detecting device |
CN208420567U (en) * | 2018-07-19 | 2019-01-22 | 吕琪 | A kind of self-adjusting three-point bending test device |
Non-Patent Citations (2)
Title |
---|
朱耕宇等: "《化工现代测试技术》", 30 September 2009 * |
李斌等: "《数控技术》", 30 April 2010 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111141615A (en) * | 2020-01-03 | 2020-05-12 | 中国石油集团川庆钻探工程有限公司 | External pressure crushing device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN206474735U (en) | A kind of cutting equipment for major diameter dimension pipeline | |
CN107282372A (en) | A kind of antirust oil painting device on the inside of building pipe | |
CN207025737U (en) | A kind of antirust oil painting device on the inside of building pipe | |
CN110057683A (en) | A kind of prestress pipe external pressure loading detection device of 3 stress | |
CN208527580U (en) | A kind of multifunctional pipe cleaning device | |
CN108788280A (en) | A kind of stainless pipe process equipment based on rotating cutting type | |
CN208773181U (en) | It is a kind of to be easily caught in inner wall of the pipe arrangement for grinding | |
CN207071853U (en) | A kind of derusting device for building pipe lateral wall | |
CN202612849U (en) | Lifting pipe support | |
CN207585431U (en) | A kind of automatic feed tube device of heat exchanger tube cleaning | |
CN203330186U (en) | Steel tube mouth roundness adjustment device for electric power iron tower | |
CN204731203U (en) | The riding wheel apparatus of steel tube ultrasonic inspection main frame | |
CN205806800U (en) | The portable online leakage compensating device of oil field pipe | |
CN208528565U (en) | A kind of placing fixer convenient for petroleum pipeline production and processing cutting | |
CN208778932U (en) | A kind of pipeline being easily installed | |
CN203585812U (en) | Instrument air supply device | |
CN215357064U (en) | Supporting and positioning clamp for pipeline welding | |
RU127915U1 (en) | STAND FOR TESTING AND SETTING SAFETY VALVES | |
CN201942508U (en) | Portable electric oil filling/discharging device | |
CN108751019A (en) | It is freely lifted type Pipe installing lift | |
CN202392151U (en) | Compressed natural gas (CNG) high-pressure ball valve | |
CN209681527U (en) | A kind of pipeline welding jigs and fixtures | |
CN105203295A (en) | Measuring device and method for measuring friction resistance of fracturing fluid | |
CN102107842B (en) | Novel electric oil injection machine | |
CN208758529U (en) | A kind of hot coiling spring manufacturing device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190726 |
|
RJ01 | Rejection of invention patent application after publication |