CN113217673A - Adjustable pressure type single current valve and use its oil transportation system - Google Patents

Adjustable pressure type single current valve and use its oil transportation system Download PDF

Info

Publication number
CN113217673A
CN113217673A CN202110591151.9A CN202110591151A CN113217673A CN 113217673 A CN113217673 A CN 113217673A CN 202110591151 A CN202110591151 A CN 202110591151A CN 113217673 A CN113217673 A CN 113217673A
Authority
CN
China
Prior art keywords
valve
valve body
hole
cavity
valve core
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
Application number
CN202110591151.9A
Other languages
Chinese (zh)
Inventor
马小飞
朱红璋
简涌钱
宋明明
周研
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN202110591151.9A priority Critical patent/CN113217673A/en
Publication of CN113217673A publication Critical patent/CN113217673A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0446—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces
    • F16K17/046—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with an obturating member having at least a component of their opening and closing motion not perpendicular to the closing faces the valve being of the gate valve type or the sliding valve type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)

Abstract

The invention discloses an adjustable pressure type check valve, which comprises a valve body, a valve seat, a valve cover, a valve rod and a valve core, wherein a cavity for medium circulation is arranged in the valve body, and the cavity is communicated with an inlet arranged at one end of the valve body; the valve seat is provided with a through hole for medium to flow through, and the valve core is communicated with the through hole in the upward movement process, so that the conveyed medium flows to an outlet arranged on the valve body through the through hole; the valve core is internally provided with an elastic piece, and the lower end of the elastic piece is pressed on the valve seat; the part of the valve rod, which is positioned outside the valve body, is provided with scale marks, and the scale marks are in direct proportion to the deformation quantity of the elastic piece. The invention also provides an oil transportation system which can be applied to the crude oil transportation pipeline. By adopting the technical scheme provided by the invention, the aims of reducing the pipeline measurement error, improving the operation convenience and saving energy are achieved, and the method can be widely applied to the technical field of oilfield transportation.

Description

Adjustable pressure type single current valve and use its oil transportation system
Technical Field
The invention relates to the field of oilfield transportation, in particular to an adjustable pressure type check valve and an oil transportation system using the same.
Background
The oil field oil pipeline is usually matched with a head end flowmeter and a tail end flowmeter to measure the oil delivery quantity and the oil recovery quantity, the flowmeters mostly adopt a positive displacement flowmeter, a mass flowmeter and the like, the pipeline leakage condition is monitored through the transmission difference, a key pipeline leakage alarm device (the pipeline leakage alarm device monitors the head end displacement, the tail end displacement and the pressure of the oil delivery in real time through a computer to judge whether the pipeline fails, the head end displacement is equal to the tail end displacement and the pressure is stable when the pipeline is normally failed, when the pipeline leaks, the head end oil delivery displacement is reduced, the head end oil delivery pressure is reduced, the tail end oil recovery displacement is reduced, the tail end pressure is reduced, the leakage position is calculated according to a pressure propagation rule) is monitored for the real-time displacement pressure, and when the pipeline leaks, the alarm is immediately carried out, and the leakage position is calculated. Along with the decrease of the oil field yield, the situation that continuous oil transportation cannot be carried out widely exists between oil field stations, when the head end and the tail end have a height difference and the geographical position of the tail end is lower, part of crude oil in a pipeline automatically flows to the tail end by gravity when the transportation is stopped, and the situation can bring the following hazards: firstly, when the head end displacement is zero, the tail end still has the displacement, and when the oil transportation stage is started, the head end displacement is larger than the tail end displacement, so that the pipeline leakage alarm device cannot effectively alarm the pipeline leakage and calculate the pipeline leakage breaking position; and secondly, along with the pressure reduction in the pipeline, associated gas in the crude oil is separated out, so that free associated gas exists in the pipeline, and further, the tail end volume type flowmeter and the mass flowmeter are influenced by gas, and the metering error is large.
Therefore, a check valve capable of adjusting the opening pressure is in need of research.
Disclosure of Invention
In order to solve the problems, the invention provides a check valve for adjusting opening pressure, which is arranged at the tail end of an oil pipeline, and the tail end and the head end of the oil pipeline have a height difference, so that the crude oil is just in a critical state incapable of flowing by gravity when oil transportation is stopped.
The technical scheme provided by the invention is as follows:
an adjustable pressure type check valve comprises a valve body, a valve seat, a valve cover, a valve rod and a valve core, wherein a cavity for medium circulation is formed in the valve body, and the cavity is communicated with an inlet formed in one end of the valve body; the valve seat is provided with a through hole for medium to flow through, and the valve core is communicated with the through hole in the upward movement process, so that the conveyed medium flows to an outlet arranged on the valve body through the through hole; an elastic piece is arranged in the valve core, and the lower end of the elastic piece is pressed on the valve core; the valve rod is provided with a scale mark at the part outside the valve body, and the scale mark is in direct proportion to the deformation of the elastic piece.
The valve seat comprises a first vertical partition plate with the lower end fixedly connected to the lower end of the cavity, a horizontal plate fixedly connected with the upper end of the first vertical partition plate, and a second vertical partition plate with the lower end fixedly connected with the horizontal plate, wherein the through hole is formed in the horizontal plate, and the upper end of the second vertical partition plate is fixedly connected with the upper part of the cavity; the elastic member is crimped in a cavity provided in the valve core, the cavity communicating with the through hole.
Furthermore, the valve core is provided with a hollow columnar structure, and the valve rod is pressed on the upper end surface of the valve core and is positioned at the central position of the valve core; the diameter of the through hole is smaller than or equal to the inner diameter of the valve core, and the valve core and the through hole are both of a conical structure with a section shape;
the horizontal plate is of a rectangular plate-shaped structure, the first vertical partition plate and the second vertical partition plate are of semicircular structures, and the widths of the first vertical partition plate and the second vertical partition plate are equal to those of the horizontal plate.
Furthermore, the scale mark extends from the lower end to the upper end of the valve rod, and the upper end of the valve rod is fixedly connected with an operating hand wheel; the valve body is provided with an extension part with a channel, and the valve rod penetrates out of the valve body from the extension part; the cavity is of a cylindrical structure; the upper end of the valve core is positioned in the extension part.
Furthermore, the inlet end and the outlet end of the valve body are both provided with flanges, and the flanges are provided with assembling holes.
Further, the valve body is formed in a cylindrical shape.
The invention also provides a technical scheme that:
an oil transportation system applying the pressure-adjustable check valve comprises a crude oil transportation pipeline, wherein the check valve is arranged at the tail end of the transportation pipeline.
Compared with the prior art, the invention has the advantages that:
by adopting the pressure regulating valve provided by the invention, the opening pressure regulation of a check valve can be realized, a flowing medium can only flow in one direction, and the flowing medium needs to reach a set pressure when flowing;
through setting up this check valve at the end of pipeline, and end and head end have certain altitude difference, and end geographical position is lower, can avoid unable continuous transport medium to lead to the inconsistent problem of head and end measurement discharge capacity.
Through setting up this check valve at the end of pipeline, and there is certain altitude difference terminal and head end to can reach the problem that reduces the measuring error that the pipeline caused at the in-process that is used and appear the probability, practicality and functional strong.
Drawings
FIG. 1 is an external structural view of the present invention;
FIG. 2 is a side view of an embodiment of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2;
FIG. 4 is a broken-away view of an embodiment of the invention;
fig. 5 is a block diagram of an embodiment of the present invention.
Detailed Description
The present invention is described in further detail below with reference to figures 1-5.
An adjustable pressure type check valve comprises a valve body 1, a valve seat 2, a valve cover, a valve rod 4 and a valve core 5, wherein a cavity 6 for medium circulation is arranged in the valve body 1, and the cavity 6 is communicated with an inlet 7 arranged at one end of the valve body 1; a through hole 8 for medium to flow is arranged on the valve seat 2, and the valve core 5 is communicated with the through hole 8 in the upward movement process, so that the conveyed medium flows to an outlet 14 arranged on the valve body 1 through the through hole 8; the valve core 5 is internally provided with an elastic piece 9, and the lower end of the elastic piece 9 is pressed on the valve core 5; the part of the valve rod 4, which is positioned outside the valve body 1, is provided with scale marks, and the scale marks are in direct proportion to the deformation of the elastic piece 9.
Compared with the control valve in the prior art, the device achieves the purpose of pressure regulation by improving the internal structure of the valve core 5 and additionally arranging the elastic part 9 and the scale marks.
The circulation process of the controlled medium in the device is as follows: the medium enters the cavity 6 of the check valve from the inlet 7 of the device, the valve core 5 is flushed by the pressure of the liquid, the liquid flows through, the medium passes through the through hole 8 on the valve seat 2 and then flows to the outlet 14, and therefore the medium conveying process is achieved. Because the elastic element 9 is arranged between the valve seat 2 and the valve core 5, the elastic element 9 is compressed in the process that liquid does not flow, when the liquid flows, the elastic element 9 extends, and the valve core 5 is flushed away, so that the purpose of pressure regulation is realized, the inlet 7 and the outlet 14 of the device are communicated, and the medium flowing action is realized.
The scale mark is arranged on the valve rod 4 and is related to the deformation of the elastic part 9, and the scale mark is specifically calibrated according to the product of the elastic coefficient and the deformation of the elastic part 9, so that the purpose of pressure regulation is realized.
The valve seat 2 comprises a first vertical partition plate 2.1 with the lower end fixedly connected with the lower end of the cavity 6, a horizontal plate 2.2 fixedly connected with the upper end of the first vertical partition plate 2.1 and a second vertical partition plate 2.3 with the lower end fixedly connected with the horizontal plate 2.2, wherein the through hole 8 is positioned on the horizontal plate 2.2, and the upper end of the second vertical partition plate 2.3 is fixedly connected with the upper part of the cavity 6; the elastic member 9 is press-fitted into a cavity provided in the valve core 5, the cavity communicating with the through hole 8.
Structurally, the cavity 8 is divided into a left part and a right part by the first vertical partition plate 2.1, the second vertical partition plate 2.3 and the horizontal partition plate 2.2, after a medium enters the cavity from the inlet 7, the medium can enter the through hole 8 in a pressure flowing process, when the valve rod 4 drives the valve core 5 to move upwards, the medium in the through hole 8 can pass through a gap between the valve core 5 and the valve seat 2 and then flows to the position of the outlet 14, and therefore the flow passing process of the medium is achieved.
The valve core 5 is provided with a hollow columnar structure, and the valve rod 4 is pressed on the upper end surface of the valve core 5 and is positioned at the central position of the valve core 5; the diameter of the through hole 8 is smaller than or equal to the inner diameter of the valve core 5, and the valve core 5 and the through hole 8 are both of a conical-frustum-shaped structure with cross sections;
horizontal plate 2.2 establishes to rectangular platelike structure, and vertical baffle 2.1 and vertical baffle two 2.3 all establish semicircular structure, and vertical baffle one 2.1 and vertical baffle two 2.3 all with horizontal plate 2.2 aequilate.
Through all setting up vertical baffle 2.1 and vertical baffle two 2.3 into semicircular structure, and its edge just in time agrees with each other with 6 internal face of cavity to realize fixed connection, prevent that the medium from the hookup location circulation of the two, then realize pressing the regulation.
The scale mark extends from the lower end to the upper end of the valve rod 4, and the upper end of the valve rod 4 is fixedly connected with an operating hand wheel 10; the valve body 1 is provided with an extension part 11 with a channel, and the valve rod 4 penetrates out of the valve body 1 from the extension part 11; the cavity 6 is of a cylindrical structure; the upper end of the valve core 5 is positioned in the extension part 11.
The function of the operating hand wheel 10 is to facilitate the flexible adjustment of the extension length of the valve rod 4 during the use of the device.
The inlet end and the outlet end of the valve body 1 are both provided with flanges 12, and the flanges 12 are provided with assembling holes 13.
The flange 12 with the assembling hole 13 can assist in realizing the function of connecting the flange on a pipeline, and is convenient to implement.
The check valve can be applied to an oil field conveying pipeline, so that the function of not additionally arranging a pressure container in the process of conveying crude oil in an oil field is realized, and the purposes of reducing cost, being convenient to operate and having low operation risk are achieved. The method specifically comprises the following steps: the check valve is arranged at the tail end of an oil pipeline, so that the aim of pressure regulation is fulfilled.
In conclusion, the check valve provided by the invention can realize the purpose of pressure regulation, and particularly can solve the problem of resource waste caused by the fact that a large amount of associated gas is emptied in the prior art in the crude oil conveying process; in addition, the device does not need to be additionally provided with external power equipment in the implementation process, and has certain energy-saving property.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1.一种可调压力型单流阀，包括阀体、阀座、阀盖以及阀杆、阀芯，其特征在于，所述阀体内设有供介质流通的腔体，所述腔体连通设于阀体一端的进口；所述阀座上设有供介质流通的通孔，所述阀芯在向上运动的过程中接通通孔，使得被输送介质经由通孔流向设于阀体上的出口；所述阀芯内设有弹性件，所述弹性件下端压接在阀芯上；所述阀杆上且位于阀体外部的部分设有刻度标识，所述刻度标识与弹性件的形变量成正比。1. An adjustable pressure type one-flow valve, comprising a valve body, a valve seat, a valve cover, a valve stem, and a valve core, wherein the valve body is provided with a cavity for medium circulation, and the cavity communicates with It is set at the inlet of one end of the valve body; the valve seat is provided with a through hole for the circulation of the medium, and the valve core is connected to the through hole during the upward movement, so that the conveyed medium flows through the through hole to the valve body. The valve core is provided with an elastic member, and the lower end of the elastic member is crimped on the valve core; the valve stem is provided with a scale mark on the part outside the valve body, and the scale mark is connected with the elastic member. The shape variable is proportional. 2.根据权利要求1所述的一种可调压力型单流阀，其特征在于，所述阀座包括下端固接在腔体下端的竖向隔板一、与竖向隔板一上端固接的水平板以及下端与水平板固接的竖向隔板二，其中，所述通孔位于水平板上，所述竖向隔板二的上端与腔体上部固接；所述弹性件压接在设于阀芯内的空腔中，所述空腔与通孔连通。2 . The pressure-adjustable check valve according to claim 1 , wherein the valve seat comprises a vertical partition plate 1 whose lower end is fixedly connected to the lower end of the cavity, and a vertical partition plate 1 fixed at the upper end. 3 . The horizontal plate connected to the horizontal plate and the vertical partition plate 2 whose lower end is fixed to the horizontal plate, wherein the through hole is located on the horizontal plate, and the upper end of the vertical partition plate 2 is fixed to the upper part of the cavity; the elastic member presses It is connected to the cavity provided in the valve core, and the cavity communicates with the through hole. 3.根据权利要求2所述的一种可调压力型单流阀，其特征在于，所述阀芯设为带有空心柱状结构，所述阀杆压接在阀芯的上端面上，且位于阀芯的中心位置；所述通孔的直径小于等于阀芯的内径，且阀芯与通孔均设为截面形状呈锥形台状结构；3 . The pressure-adjustable check valve according to claim 2 , wherein the valve core is provided with a hollow cylindrical structure, the valve stem is crimped on the upper end surface of the valve core, and 3 . It is located in the center of the valve core; the diameter of the through hole is less than or equal to the inner diameter of the valve core, and both the valve core and the through hole are set to have a conical truncated cross-sectional shape; 所述水平板设为矩形板状结构，所述竖向隔板一和竖向隔板二均设为半圆形结构，且所述竖向隔板一和竖向隔板二均与水平板等宽。The horizontal plate is set as a rectangular plate-like structure, the vertical partition 1 and the vertical partition 2 are both set as semicircular structures, and the vertical partition 1 and the vertical partition 2 are both connected to the horizontal plate. Equal width. 4.根据权利要求1所述的一种可调压力型单流阀，其特征在于，所述刻度标识从阀杆的下端延伸至上端位置，所述阀杆上端固接有操作手轮；所述阀体上设有带通道的延长部，所述阀杆从延长部内穿出阀体；所述腔体设为筒状结构；所述阀芯上端位于延长部内。4. An adjustable pressure check valve according to claim 1, wherein the scale mark extends from the lower end of the valve stem to the upper end position, and the upper end of the valve stem is fixed with an operating handwheel; The valve body is provided with an extension part with a channel, and the valve stem penetrates the valve body from the extension part; the cavity is set as a cylindrical structure; the upper end of the valve core is located in the extension part. 5.根据权利要求4所述的一种可调压力型单流阀，其特征在于，所述阀体的进口端和出口端均设有法兰，所述法兰上设有装配孔。5 . The pressure-adjustable check valve according to claim 4 , wherein the inlet end and the outlet end of the valve body are provided with flanges, and the flanges are provided with mounting holes. 6 . 6.根据权利要求5所述的一种可调压力型单流阀，其特征在于，所述阀体设为圆柱状。6 . The pressure-adjustable check valve according to claim 5 , wherein the valve body is cylindrical. 7 . 7.一种应用可调压力型单流阀的输油系统，其特征在于，包括原油输送管道，所述输送管道的末端设置有权利要求1-6任一项所述的单流阀。7 . An oil transportation system using an adjustable pressure check valve, characterized in that it comprises a crude oil transportation pipeline, and the end of the transportation pipeline is provided with the check valve according to any one of claims 1 to 6 .
CN202110591151.9A 2021-05-28 2021-05-28 Adjustable pressure type single current valve and use its oil transportation system Pending CN113217673A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110591151.9A CN113217673A (en) 2021-05-28 2021-05-28 Adjustable pressure type single current valve and use its oil transportation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110591151.9A CN113217673A (en) 2021-05-28 2021-05-28 Adjustable pressure type single current valve and use its oil transportation system

Publications (1)

Publication Number Publication Date
CN113217673A true CN113217673A (en) 2021-08-06

Family

ID=77099061

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110591151.9A Pending CN113217673A (en) 2021-05-28 2021-05-28 Adjustable pressure type single current valve and use its oil transportation system

Country Status (1)

Country Link
CN (1) CN113217673A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2038582U (en) * 1988-10-12 1989-05-31 江苏省扬中县机械仪表厂 One-way valve with flow monitoring function
CN203979534U (en) * 2014-07-25 2014-12-03 福建省海洋阀门科技有限公司 A kind of cut-off modulating valve with check function
CN206268157U (en) * 2016-10-26 2017-06-20 华东矿用设备有限公司 A kind of hydraulic system one-way throttle valve
CN207830647U (en) * 2018-02-02 2018-09-07 玉环津水阀门有限公司 Screw down nonreturn valve
CN208919413U (en) * 2018-08-20 2019-05-31 盐城市琪航石油机械有限公司 A kind of water injection well check valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2038582U (en) * 1988-10-12 1989-05-31 江苏省扬中县机械仪表厂 One-way valve with flow monitoring function
CN203979534U (en) * 2014-07-25 2014-12-03 福建省海洋阀门科技有限公司 A kind of cut-off modulating valve with check function
CN206268157U (en) * 2016-10-26 2017-06-20 华东矿用设备有限公司 A kind of hydraulic system one-way throttle valve
CN207830647U (en) * 2018-02-02 2018-09-07 玉环津水阀门有限公司 Screw down nonreturn valve
CN208919413U (en) * 2018-08-20 2019-05-31 盐城市琪航石油机械有限公司 A kind of water injection well check valve

Similar Documents

Publication Publication Date Title
US2585172A (en) Mixing mechanism for liquid and beverage dispensing apparatus
CN113217673A (en) Adjustable pressure type single current valve and use its oil transportation system
CN205858315U (en) A gas-liquid two-phase metering device at the wellhead of a gas well
CN102506950B (en) Device for detecting free flow and back pressure flow of electromagnetic pump and detection method
CN209296090U (en) Liquid level emasuring device
CN110924080B (en) Detergent dispenser assembly
JP4854331B2 (en) Fluid mixing device
CN219492424U (en) A booster system of a launch vehicle and the launch vehicle
CN203948945U (en) A Crude Oil Separation Buffer Multiphase Metering Device
CN105735650A (en) Vibration reduction method for concrete pumping equipment and boom end of concrete pump truck
CN116592288A (en) Energy supply quantity detection equipment
CN211553328U (en) A test water testing arrangement for fire control is terminal
CN110131468A (en) A coupling device for a control valve in a multi-component metering system
CN111656503A (en) Liquid supply device for maintaining constant pressure
CN114658946A (en) Tubular pulsation damper with bag type damper
CN110926846A (en) A water test device for fire terminal
JP2003167630A (en) Flow control device and flow control method
CN211215549U (en) Separation measurement sled of high-efficient intelligence
CN222848741U (en) Multi-channel wing valve
CN107631159A (en) One kind supplies fat pipeline overflow valve
CN2537999Y (en) Liquid flow controller for emulsifying process of explosive production
CN207231561U (en) Measuring device for measuring liquid flow of pipeline
JP4854330B2 (en) Fluid mixing device
CN212028641U (en) Non-return structure of steel pipe concrete pumping device
CN221037543U (en) Automatic cleaning device for mass flowmeter

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