CN203069337U - Hydraulic pressure test machine for hydraulic pressure detection of steel pipe - Google Patents

Hydraulic pressure test machine for hydraulic pressure detection of steel pipe Download PDF

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Publication number
CN203069337U
CN203069337U CN 201220675316 CN201220675316U CN203069337U CN 203069337 U CN203069337 U CN 203069337U CN 201220675316 CN201220675316 CN 201220675316 CN 201220675316 U CN201220675316 U CN 201220675316U CN 203069337 U CN203069337 U CN 203069337U
Authority
CN
China
Prior art keywords
hydraulic pressure
pressure
valve
steel pipe
swing check
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.)
Expired - Fee Related
Application number
CN 201220675316
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Chinese (zh)
Inventor
刘云
苏双合
魏剑锋
岳金成
王飞义
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianshui Metalforming Machine Tool Group Co Ltd
Original Assignee
Tianshui Metalforming Machine Tool Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tianshui Metalforming Machine Tool Group Co Ltd filed Critical Tianshui Metalforming Machine Tool Group Co Ltd
Priority to CN 201220675316 priority Critical patent/CN203069337U/en
Application granted granted Critical
Publication of CN203069337U publication Critical patent/CN203069337U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a hydraulic pressure test machine for the hydraulic pressure detection of a steel pipe, comprising an exhaust valve, a low pressure water pump, a high pressure water pump and a swing check valve which are communicated with a hydraulic pressure machine. The swing check valve is arranged between the low pressure water pump and the high pressure water pump and is communicated through a pipeline; the hydraulic pressure test machine comprises a fixed terminal and a mobile terminal; a hydraulic test tube is arranged between the fixed terminal and the mobile terminal for testing the hydraulic pressure; a valve clack which is open in a unidirectional manner towards the hydraulic pressure test machine is arranged in the swing check valve, and the valve clack is movably connected with the swing check valve; the water transmitted from the low pressure water pump flows to open the valve clack to enter the steel pipe, and after the steel pipe is filled, the valve clack automatically resets; and when water transmitted from the high pressure water pump flows into the steel pipe, the hydraulic pressure in the steel pipe is increased, a force is reversely applied to the valve clack, and the valve clack is tightly contacted to the swing check valve. According to the hydraulic pressure test machine for the hydraulic pressure detection of a steel pipe, the problem of hydraulic pressure influence caused by sealing failure of the prior water charging valve is solved, the fixed terminal and the mobile terminal of the hydraulic pressure test machine are adaptable to steel pipes with different specifications and lengths, the universality is enhanced, the sealing effect is very good, no pressure supplement is required in the pressure stabilization process, and the hydraulic pressure test cure is regular.

Description

A kind of hydrostatic testing machine for the detection of steel pipe hydraulic pressure
Technical field
The utility model relates to a kind of hydraulic pressure pressure tester, specifically relates to a kind of hydrostatic testing machine for the detection of steel pipe hydraulic pressure.
Background technology
The hydraulic testing is an important test item in the oil gas conveying steel pipe manufacture process, reach the test pressure of standard code when hydraulic pressure value after, require pressurize regular hour (being generally 10 ~ 15 seconds) and pressure surge can not surpass 0.5MPa.Therefore, all kinds of valve members of hydrostatic testing machine must seal reliably.Present of home make hydrostatic testing machine has generally adopted filling valve, because filling valve is the effect bottom spool open and close at oil cylinder.Rely on the cone match of spool and valve seat to realize sealing, in order to guarantee not leak in supercharging and the voltage stabilizing process, just must guarantee the quality of fit of spool and valve seat.The designing requirement spool cooperates the conical surface must carry out bedding-in with valve seat, but because big (300mm of valve core diameter, the weight 260kg) bedding-in of spool and valve seat size is very difficult, so quality of fit is difficult to reach designing requirement, and water under high pressure leaks can hardly be avoided.And have impurity in the recirculated water of using in the pressure testing process, under spool and valve seat clashed into repeatedly, scar can appear in the seal line, and the seal failure situation will appear in filling valve work a period of time.And the system leak in the pressure testing process is mainly in this valve.So, how to guarantee that filling valve sealing reliably becomes key.
The utility model content
The purpose of this utility model is exactly at above-mentioned demand of the prior art and problem, a kind of good sealing effect is provided, the hydrostatic testing machine that is used for the detection of steel pipe hydraulic pressure that stability is high, solved because the filling valve seal failure influences the problem of the hydraulic testing, sealing effectiveness is fabulous, do not need ftercompction in the voltage stabilizing process, hydraulic testing curve is regular.
For reaching above-mentioned technique effect, the utility model adopts following technical scheme: a kind of hydrostatic testing machine that detects for steel pipe hydraulic pressure comprises water pressure engine, the vent valve that is communicated with water pressure engine, low-pressure pump, high-pressure hydraulic pump and swing check valve, swing check valve are arranged between low-pressure pump and the water pressure engine and are communicated with by pipeline.
Preferably, described water pressure engine comprises stiff end and mobile terminal, and the pressure testing water pipe is arranged at pressure testing between the stiff end of water pressure engine and the mobile terminal.
Preferably, be communicated with the two-way pipeline between described low-pressure pump and the swing check valve, be equipped with pneumatic stopping valve on the pipeline of every road.
Preferably, be provided with to the flap of the unidirectional unlatching of water pressure engine direction in the described swing check valve valve body, flap and valve body flexibly connect.
Preferably, between described flap and valve body elastic cord breaker is set.
The beneficial effects of the utility model:
The utility model replaces filling valve with a swing check valve, the water that low-lift pump is got is washed flap open and is entered steel pipe, after being full of steel pipe, flap automatically reset when low-lift pump cut out, high-pressure pump is fetched water and is entered steel pipe, hydraulic pressure increases acting in opposition in flap in the steel pipe, flap is closely contacted with valve body, and more pressure is more tight, and sealing effectiveness is fabulous, efficiently solve filling valve seal failure in the past and influence the problem of the hydraulic testing, the steel pipe that the setting of water pressure engine stiff end and mobile terminal can adapt to different size and length detects pressure testing, increases universality, and sealing effectiveness is fabulous, do not need ftercompction in the voltage stabilizing process, hydraulic testing curve is regular.
Description of drawings
Fig. 1 is structural scheme of mechanism of the present utility model;
Fig. 2 is the structural representation of the utility model swing check valve.
Wherein: 1-low-pressure pump, 2-pneumatic stopping valve A, 3-pneumatic stopping valve B, 4-swing check valve, 5-stiff end, 6-pressure testing steel pipe, 7-mobile terminal, 8-vent valve, 9-high-pressure hydraulic pump, 10-valve body, 11-flap.
Embodiment
Extremely shown in Figure 2 as Fig. 1, a kind of hydrostatic testing machine that detects for steel pipe hydraulic pressure comprises water pressure engine, the vent valve 8 that is communicated with water pressure engine, low-pressure pump 1, high-pressure hydraulic pump 9 and swing check valve 4, swing check valve 4 is arranged between low-pressure pump 1 and the water pressure engine and is communicated with by pipeline, water pressure engine comprises stiff end 5 and mobile terminal 7, pressure testing water pipe 6 is arranged at pressure testing between the stiff end 5 of water pressure engine and the mobile terminal 7, be communicated with the two-way pipeline between low-pressure pump 1 and the swing check valve 4, one road pipeline is provided with pneumatic stopping valve A2, and another road pipeline is provided with pneumatic stopping valve B3; Be provided with in the valve body 10 of swing check valve 4 to the flap 11 of the unidirectional unlatching of water pressure engine direction, flap 11 flexibly connects by straight pin with valve body 10.
Above-mentioned pneumatic stopping valve can be connected control with computing machine, and the annexation of flap and valve body is replaceable to be bearing pin or elastomeric element etc., and elastic cord breakers such as rubber or plastic resin are set between flap and valve body increases sealing property.
During work, the water that low pressure charging pump 1 is got is opened swing check valve 4 through pneumatic stopping valve A2, enters pressure testing steel pipe 6 by stiff end 5.After water was filled with in the steel pipe, a large amount of water that flow out in vent valve 8 pipes of unlatching at this moment, were closed vent valve 8, and high-pressure hydraulic pump 9 is started working and suppressed.Simultaneously, the low-lift pump water outlet is flowed back to the pond by pneumatic stopping valve B3.Swing check valve 4 automatically resets and closes.Hydraulic pressure raises gradually in the steel pipe, and water under high pressure reacts on flap 11, and flap 11 is closely contacted with valve body 10.Hydraulic pressure is more high, presses more tightly, and sealing effectiveness is more good.
The utility model efficiently solves the problem that filling valve seal failure in the past influences the hydraulic testing, the steel pipe that the setting of water pressure engine stiff end and mobile terminal can adapt to different size and length detects pressure testing, increases universality, and sealing effectiveness is fabulous, do not need ftercompction in the voltage stabilizing process, hydraulic testing curve is regular.
Above-described only is preferred embodiment of the present utility model.Should be understood that for the person of ordinary skill of the art, under technology enlightenment provided by the utility model, as the common practise of this area, can also make other equivalent modifications and improvement, also should be considered as protection domain of the present utility model.

Claims (5)

1. one kind is used for the hydrostatic testing machine that steel pipe hydraulic pressure detects, it is characterized in that: the described hydrostatic testing machine that detects for steel pipe hydraulic pressure comprises water pressure engine, the vent valve that is communicated with water pressure engine, low-pressure pump, high-pressure hydraulic pump and swing check valve, swing check valve are arranged between low-pressure pump and the water pressure engine and are communicated with by pipeline.
2. according to the described a kind of hydrostatic testing machine that detects for steel pipe hydraulic pressure of claim 1, it is characterized in that: described water pressure engine comprises stiff end and mobile terminal, and the pressure testing water pipe is arranged at pressure testing between the stiff end of water pressure engine and the mobile terminal.
3. according to the described a kind of hydrostatic testing machine that detects for steel pipe hydraulic pressure of claim 1, it is characterized in that: be communicated with the two-way pipeline between described low-pressure pump and the swing check valve, be equipped with pneumatic stopping valve on the pipeline of every road.
4. according to the described a kind of hydrostatic testing machine for the detection of steel pipe hydraulic pressure of claim 1, it is characterized in that: be provided with to the flap of the unidirectional unlatching of water pressure engine direction in the described swing check valve valve body, flap and valve body flexibly connect.
5. according to the described a kind of hydrostatic testing machine for the detection of steel pipe hydraulic pressure of claim 4, it is characterized in that: between described flap and valve body elastic cord breaker is set.
CN 201220675316 2012-12-10 2012-12-10 Hydraulic pressure test machine for hydraulic pressure detection of steel pipe Expired - Fee Related CN203069337U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220675316 CN203069337U (en) 2012-12-10 2012-12-10 Hydraulic pressure test machine for hydraulic pressure detection of steel pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220675316 CN203069337U (en) 2012-12-10 2012-12-10 Hydraulic pressure test machine for hydraulic pressure detection of steel pipe

Publications (1)

Publication Number Publication Date
CN203069337U true CN203069337U (en) 2013-07-17

Family

ID=48768111

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220675316 Expired - Fee Related CN203069337U (en) 2012-12-10 2012-12-10 Hydraulic pressure test machine for hydraulic pressure detection of steel pipe

Country Status (1)

Country Link
CN (1) CN203069337U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105034442A (en) * 2015-07-10 2015-11-11 合肥鼎鑫模具有限公司 Hydraulic pressure and air pressure system of hydraulic press
CN105583204A (en) * 2016-02-22 2016-05-18 上海金保莱不锈钢有限公司 Multi-station hydraulic press
CN107860532A (en) * 2017-11-14 2018-03-30 中车长春轨道客车股份有限公司 Box framework air tightness experimental device and method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105034442A (en) * 2015-07-10 2015-11-11 合肥鼎鑫模具有限公司 Hydraulic pressure and air pressure system of hydraulic press
CN105034442B (en) * 2015-07-10 2016-09-14 合肥鼎鑫模具有限公司 Hydraulic press hydraulic pressure air pressure system
CN105583204A (en) * 2016-02-22 2016-05-18 上海金保莱不锈钢有限公司 Multi-station hydraulic press
CN107860532A (en) * 2017-11-14 2018-03-30 中车长春轨道客车股份有限公司 Box framework air tightness experimental device and method

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C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130717

Termination date: 20141210