CN204389008U - A kind of container Dynamic Weighting device for fluid flow verification - Google Patents
A kind of container Dynamic Weighting device for fluid flow verification Download PDFInfo
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- CN204389008U CN204389008U CN201420445266.2U CN201420445266U CN204389008U CN 204389008 U CN204389008 U CN 204389008U CN 201420445266 U CN201420445266 U CN 201420445266U CN 204389008 U CN204389008 U CN 204389008U
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- counterweight
- vertical rod
- ladder
- slide block
- block
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Abstract
The utility model relates to a kind of container Dynamic Weighting device for fluid flow verification, belongs to metrological testing technology field.Counterweight is according to the weight of flow verification operating mode magnitude setting with each counterweight; Counterweight is placed in adjustment block, and the staircase structure in adjustment block guarantees that counterweight drops on specified altitude assignment; Adjustment block is fixedly mounted on bracket, and bracket is with being fixedly connected on suspension rod; Ladder slide block is fixedly connected on the tache motorice of linear actuator; Vertical rod connects pulley, and pulley is freely placed on the step of ladder slide block; Linear actuator drives the tangential movement of ladder slide block, and pulley driving vertical rod is moved up and down; When vertical rod moves up and down, the cone block connected thereon drives counterweight to move up and down by the conical surface; Vertical rod keeps vertical direction free state.The weight of returnable and counterweight acts on suspension rod, and passes to force snesor by force transmitting board.The utility model can realize high precision container Dynamic Weighting, and in one action, carry out repeatedly the flow measurement of different operating mode.
Description
Technical field
Utility model relates to be measured liquid-propellant rocket engine propellant flow rate, is specifically related to a kind of container Dynamic Weighting device for fluid flow verification, belongs to metrological testing technology field.
Background technology
" liquid propellant rocket engine test " that the Guo Xiaofeng published Yuhang Publishing House in September, 1991 writes one be the 172nd page of-175 pages in book, discloses a kind of Dynamic Weighting method measured for liquid-propellant rocket engine propellant flow rate, and give applicating example.This method and apparatus directly can provide mass rate, and precision is also higher, can be used for, in high viscosity, volatile, poisonous mordant propellant flow rate are measured, being also used in the flow measurement of cryogenic propellant.In the method, propellant in tank continuously outflows, the quality of force cell impression constantly reduces, in particular moment, counterweight is added on the counterweight seat of tank bottom, flow compensated goes out liquid quality, when force cell twice reading is equal, then have during this period of time, the propellant mass flowed out in tank just in time equal standard test weight quality and at this moment in tank supplemented to the gaseous mass sum of supercharging.
But the method introduces this error of gaseous mass of tank being supplemented to supercharging, in order to overcome pipeline friction loss and local resistance loss, this boost pressure, usually at 0.8MPa-1.2MPa, needs monitoring boost pressure and gas flow to calculate correction.Meanwhile, the method adopt cylinder realize counterweight load action, there are three aspect problems: one be counterweight all the time by cylinder supports, high to the security requirement of cylinder; Two is that to be subject to the cylinder bearing capacity of dimension constraint limited, and it is comparatively large that counterweight can not do, and is restricted when large discharge measures application; Three is when flow measurement needs the action of repeated loading counterweight, only has maximum three-stage cylinder to realize classification action at present, is difficult to the combination realizing more counterweight actions, and the multi-stage cylinder bearing capacity ratio list cylinder bearing capacity being subject to dimension constraint is lower.
Therefore, need a kind of novel Dynamic Weighting device to verify mass rate, overcome above-mentioned precision, security and functional issues.
Utility model content
In view of this, the utility model provides a kind of container Dynamic Weighting device for fluid flow verification, can realize high precision container Dynamic Weighting, and in one action, carry out repeatedly the flow measurement of different operating mode.
For a container Dynamic Weighting device for fluid flow verification, comprise returnable, counterweight, adjustment block, bracket, linear actuator, ladder slide block, pulley, vertical rod, cone block, force snesor, suspension rod, force transmitting board and support frame;
Described support frame is provided with two horizontal girds in the height direction, and above-mentioned two horizontal girds lay respectively at top and the middle section position of support frame;
Described counterweight is processed with conical central hole, and the weight of counterweight and number are selected according to flow verification operating mode;
The outer circumference surface of described vertical rod is coaxially connected with two pulleys;
The lower surface of described adjustment block and ladder slide block is plane, and its upper surface is cascaded surface, and each ladder height difference is equal; Ladder slide block is slotted formation fork configuration along its length, and groove runs through the upper and lower surface of ladder slide block, and the openend of groove is positioned at the end face of first order step, and the width of groove is greater than the external diameter of vertical rod; Ladder quantity in described adjustment block is equal with the quantity of counterweight
Described cone block is processed with the center pit be connected with vertical rod, and male cone (strobilus masculinus) matches with the conical central hole of counterweight;
Its integrated connection closes: one end of suspension rod is fixedly connected with force transmitting board, and the other end connects returnable, and the horizontal pipeline section of outside feed tube is fixedly connected on framework, and the end of feed tube is positioned at returnable inside and keeps contactless with it; Force snesor is between force transmitting board and the horizontal gird on support frame top; Vertical rod passes perpendicularly through two horizontal girds of support frame, and the two ends up and down of vertical rod realize radial constraint by rolling linear bearing, and keeps vertical direction free state; Ladder slide block is positioned at the upper surface of the horizontal gird in support frame stage casing, its groove level gets out of the way vertical rod, two pulleys in vertical rod are supported by the first order step surface of fork configuration, namely the degree of freedom of the vertical direction of vertical rod realizes spacing by the horizontal stand terrace of ladder slide block, and the rear end of ladder slide block is provided with linear actuator; Suspension rod is fixedly connected with the bracket of more than a group, adjustment block is placed in the upper surface of bracket, the conical central hole of counterweight is freely placed on the cascaded surface of adjustment block through after vertical rod, and the cone block that vertical rod is fixedly connected with is positioned at the below of counterweight and corresponding with conical central hole; The weight of returnable and counterweight acts on suspension rod, and passes to force snesor by force transmitting board;
Further, the ladder quantity of described ladder slide block equals quantity+1, the first ladder of counterweight is initial position.
Further, between the ladder of described ladder slide block, adopt slope and round-corner transition, guarantee that vertical rod moves up and down steady.
Further, described linear actuator is that the mode of linear electric motors or motor wire distribution thick stick realizes, and can select the actuator of different capacity, realize the action of multiple weight counterweight.
Further, pulley also can replace with rolling bearing, and this pulley can roll on ladder slide block, and along with moving horizontally of ladder slide block, pulley driving vertical rod moves up and down;
Weighing process and principle: because weighing object is returnable, the liquid flowing into returnable falls naturally, flow into returnable from the bottom of vertical tube, and therefore weigh is not by pressurization gas quality influence.
Counterweight is initially in the state be loaded in returnable, weigh quality W comprise returnable self and wherein liquid quality with load counterbalance mass sum, be set to W
0; After test starts, the liquid in pressurized container flows into returnable along vertical tube, at t
onmoment liquid flows into, and after flow field is stable, is increased to certain preset value W at W
xtime, be set to t
1in the moment, timer starts writing time, and liquid continuous inflow returnable, arrives predetermined t
sin the moment, Self-tipping quality is the counterweight of m, weighs quality W and reduces, when W is increased to W again
xt
2in the moment, timer stops timing, then at t
1to t
2the time interval in, flow into the quality m that the liquid quality of returnable equals to unload counterweight.
Setting adjustment block and ladder slide block each ladder height difference be Δ
1, the adjustment of the relative elemental height of each counterweight is realized by putting adjustment block position.
When counterweight is all placed in the same position of adjustment block, then all counterweights are all adjusted to phase co-altitude, and the vertical range set between the inner conical surface of initial counterweight conical central hole and cone block male cone (strobilus masculinus) is Δ
2, and ensure Δ
1> Δ
2.Drive ladder slide block to move by linear actuator, make the sliding upper ladder of vertical rod, namely rise Δ
1, then all disposable the picking-up by cone block of counterweight hangs in vertical rod, realizes whole counterweight weight from the uninstall action suspension rod.
When on the different ladders that counterweight drops on adjustment block, the action that counterweight various combination unloads successively can be realized, to meet the requirement of different flow repeatedly weighing measurement.As for realizing counterweight A, the unloading step by step successively of counterweight B+ counterweight C, can adopt following steps: counterweight A drops on the I position of adjustment block, namely between the taper hole of initial counterweight A and cone block, vertically distance is Δ
2, and ensure Δ
1> Δ
2; Counterweight B and counterweight C drops on the II position of adjustment block, and namely between the taper hole of initial counterweight B and counterweight C and cone block, vertically distance is Δ
1+ Δ
2, then counterweight is adjusted to the height of various combination.Drive ladder slide block to move by linear actuator, make sliding upper first ladder of vertical rod, namely rise Δ
1, then counterweight A is bored block and holds up and hang in vertical rod, and between the center taper hole of counterweight B and counterweight C and cone block, vertically Distance Shortened is Δ
2, namely achieve the weight of counterweight A from the uninstall action returnable suspension rod.Again drive ladder slide block to move by linear actuator, make sliding upper second ladder of vertical rod, namely rise Δ again
1, then on the basis that counterweight A has unloaded, counterweight B is held up by cone block and hangs in vertical rod together with counterweight C, namely achieves counterweight A, action that the weight of counterweight B+ counterweight C successively unloads from returnable suspension rod.The numerical value weighed is obtained by force snesor.
Beneficial effect:
(1) Dynamic Weighting device of the present utility model promotes a series of full mechanical action realizations such as ladder slide block by linear actuator completely from being loaded into unloading, not by the error effect of pressurization gas quality, therefore can obtain high-quality measurement result;
(2) the utility model counterweight is realized supporting by adjustment block and bracket, and supporting construction is firm, essential safety, there is not the safety issue dropped in whole operating process;
(3) counterweight weight of the present utility model can set as required, and not by the restriction of range of weighing, and the quantity that can adjust counterweight realizes any weight combinations;
(4) Dynamic Weighting device of the present utility model can realize the multiple unloaded operation mode of counterweight various combination, disposablely can unload polylith counterweight simultaneously, can realize unloading step by step successively of polylith counterweight various combination again;
(5) in the utility model, the vertical position of counterweight is ensured by the horizontal segment of ladder slide block, as long as at this horizontal segment, no matter on which position of horizontal segment, the height of counterweight is all the same.Therefore, to driving, the linear actuator positioning accuracy request of ladder slide block movement is lower, and the executive component of low cost can obtain high-precision position control.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model.
Wherein, 1-returnable, 2-feed tube, 3-rolling linear bearing A, 4-pulley, 5-vertical rod, 6-bores block, 7-counterweight, 8-rolling linear bearing B, 9-force snesor, 10-adjustment block, 11-bracket, 12-suspension rod, 13-linear actuator, 14-ladder slide block, 15-framework, 16-force transmitting board.
Embodiment
To develop simultaneously embodiment below in conjunction with accompanying drawing, the utility model is described in detail.
As shown in Figure 1, the utility model provides a kind of container Dynamic Weighting device for fluid flow verification, comprises returnable 1, counterweight 7, adjustment block 10, bracket 11, linear actuator 13, ladder slide block 14, pulley 4, vertical rod 5, cone block 6, force snesor 9, suspension rod 12, rolling linear bearing A3, rolling linear bearing B8, force transmitting board 16 and support frame 15;
Described support frame 15 is provided with two horizontal girds in the height direction, and above-mentioned two horizontal girds lay respectively at top and the middle section position of support frame 15;
Described counterweight 7 is processed with conical central hole, and the weight of counterweight 7 and number are selected according to flow verification operating mode;
The outer circumference surface of described vertical rod 5 is coaxially connected with two pulleys 4;
The lower surface of described adjustment block 10 and ladder slide block 14 is plane, and its upper surface is cascaded surface, and each ladder height difference is equal; Ladder slide block 14 is slotted along its length and is formed fork configuration, groove runs through the upper and lower surface of ladder slide block 14, the openend of groove is positioned at the end face of first order step, the width of groove is greater than the external diameter of vertical rod 5, adopt slope and round-corner transition between the ladder of ladder slide block 14, guarantee that vertical rod 5 moves up and down steady; Quantity+1, the first ladder that the ladder quantity of ladder slide block 14 equals counterweight 7 is initial position; Ladder quantity in adjustment block 10 is equal with the quantity of counterweight 7;
Described cone block 6 is processed with the center pit be connected with vertical rod 5, and male cone (strobilus masculinus) matches with the conical central hole of counterweight 7;
Its integrated connection closes: one end of suspension rod 12 is fixedly connected with force transmitting board 16, and the other end connects returnable 1, and the horizontal pipeline section of outside feed tube 2 is fixedly connected on framework 15, and the end of feed tube 2 is positioned at returnable 1 inside and keeps contactless with it; Force snesor 9 is between force transmitting board 16 and the horizontal gird on support frame 15 top; Vertical rod 5 passes perpendicularly through two horizontal girds of support frame 15, and the two ends up and down of vertical rod 5 realize radial constraint by rolling linear bearing B8 and rolling linear bearing A3, and keeps vertical direction free state; Ladder slide block 14 is positioned at the upper surface of the horizontal gird in support frame 15 stage casing, its groove level gets out of the way vertical rod 5, two pulleys 4 in vertical rod 5 are supported by the first order step surface of fork configuration, namely the degree of freedom of the vertical direction of vertical rod 5 realizes spacing by the horizontal stand terrace of ladder slide block 14, and the rear end of ladder slide block 14 is provided with linear actuator 13; Suspension rod 12 is fixedly connected with the bracket 11 of more than a group, adjustment block 10 is placed in the upper surface of bracket 11, the conical central hole of counterweight 7 is freely placed on the cascaded surface of adjustment block 10 through after vertical rod 5, and the cone block 6 that vertical rod 5 is fixedly connected with is positioned at the below of counterweight 7 and corresponding with conical central hole; The weight of returnable 1 and counterweight 7 acts on suspension rod 12, and passes to force snesor 9 by force transmitting board 16;
Embodiment 1: the container Dynamic Weighting of single large discharge verification
Counterweight 7 is initially in the state be loaded in returnable 1, weigh quality W comprise returnable 1 self and wherein liquid quality with load counterweight 7 quality sum, be set to W
0.After test starts, the liquid in pressurized container flows into returnable 1, at t along pipeline
onmoment liquid flows into, and after flow field is stable, is increased to certain preset value W at W
xtime, be set to t
1in the moment, timer starts writing time, and liquid continuous inflow returnable 1, arrives predetermined t
sin the moment, Self-tipping quality is the counterweight 7 of m, weighs quality W and reduces, when W is increased to W again
xt
2in the moment, timer stops timing, then at t
1to t
2the time interval in, flow into the quality m that the liquid quality of returnable 1 equals to unload counterweight 7.
During the verification of single large discharge, need the action together of multiple counterweight.When counterweight all drops on the I position of adjustment block, then all counterweights are all adjusted to phase co-altitude, setting adjustment block 10 and ladder slide block 14 each ladder height difference be Δ
1, the adjustment of the relative elemental height of each counterweight is realized by putting adjustment block 10 position; The vertical range set between the inner conical surface of initial counterweight conical central hole and cone block male cone (strobilus masculinus) is Δ
2, and ensure Δ
1> Δ
2.Drive ladder slide block 14 to move by linear actuator 13, make the sliding upper ladder of vertical rod 5, namely rise Δ
1, then all disposable the picking-up by cone block of counterweight hangs in vertical rod, realizes whole counterweight weight from the uninstall action suspension rod 12, namely completes the container Dynamic Weighting process of single large discharge verification.
Embodiment 2: the container Dynamic Weighting of repeatedly different flow verification
Repeatedly during different flow verification, need the action respectively of multiple counterweight 7, and have the requirement of counterweight combinative movement.When on the different ladders that counterweight drops on adjustment block, the action that counterweight 7 various combination unloads successively can be realized, to meet the requirement of different flow repeatedly weighing measurement.As for realizing counterweight A, the unloading step by step successively of counterweight B+ counterweight C, can adopt following steps: counterweight A drops on the I position of adjustment block, namely between the taper hole of initial counterweight A and cone block, vertically distance is Δ
2, and ensure Δ
1> Δ
2; Counterweight B and counterweight C drops on the II position of adjustment block, and namely between the taper hole of initial counterweight B and counterweight C and cone block, vertically distance is Δ
1+ Δ
2, then counterweight is adjusted to the height of various combination.Drive ladder slide block to move by linear actuator, make sliding upper 1st ladder of vertical rod, namely rise Δ
1, then counterweight A is bored block and holds up and hang in vertical rod, and between the taper hole of counterweight B and counterweight C and cone block, vertically Distance Shortened is Δ
2, namely achieve the weight of counterweight A from the uninstall action returnable suspension rod.Again drive ladder slide block to move by linear actuator, make sliding upper 2nd ladder of vertical rod, namely rise Δ again
1then on the basis that counterweight A has unloaded, counterweight B is held up by cone block and hangs in vertical rod together with counterweight C, namely achieves counterweight A, action that the weight of counterweight B+ counterweight C successively unloads from returnable suspension rod, namely completes repeatedly the container Dynamic Weighting process of flow verification.
In sum, these are only preferred embodiment of the present utility model, be not intended to limit protection domain of the present utility model.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. the container Dynamic Weighting device for fluid flow verification, it is characterized in that, comprise returnable (1), counterweight (7), adjustment block (10), bracket (11), linear actuator (13), ladder slide block (14), pulley (4), vertical rod (5), cone block (6), force snesor (9), suspension rod (12), force transmitting board (16) and support frame (15);
Described support frame (15) is provided with two horizontal girds in the height direction, and above-mentioned two horizontal girds lay respectively at top and the middle section position of support frame (15);
(7) are processed with conical central hole with described counterweight, and the weight of counterweight (7) and number are selected according to flow verification operating mode;
The outer circumference surface of described vertical rod (5) is coaxially connected with two pulleys (4);
The lower surface of described adjustment block (10) and ladder slide block (14) is plane, and its upper surface is cascaded surface, and each ladder height difference is equal; Ladder slide block (14) is slotted along its length and is formed fork configuration, and groove runs through the upper and lower surface of ladder slide block (14), and the openend of groove is positioned at the end face of first order step, and the width of groove is greater than the external diameter of vertical rod (5); Ladder quantity in described adjustment block (10) is equal with the quantity of counterweight (7)
Described cone block (6) is processed with the center pit be connected with vertical rod (5), and male cone (strobilus masculinus) matches with the conical central hole of counterweight (7);
Its integrated connection closes: one end of suspension rod (12) is fixedly connected with force transmitting board (16), the other end connects returnable (1), the horizontal pipeline section of outside feed tube (2) is fixedly connected on framework (15), and the end of feed tube (2) is positioned at returnable (1) inside and keeps contactless with it; Force snesor (9) is positioned between the horizontal gird on force transmitting board (16) and support frame (15) top; Vertical rod (5) passes perpendicularly through two horizontal girds of support frame (15), and the two ends up and down of vertical rod (5) realize radial constraint by rolling linear bearing, and keeps vertical direction free state; Ladder slide block (14) is positioned at the upper surface of the horizontal gird in support frame (15) stage casing, its groove level gets out of the way vertical rod (5), two pulleys (4) in vertical rod (5) are supported by the first order step surface of fork configuration, the degree of freedom of the vertical direction of i.e. vertical rod (5) realizes spacing by the horizontal stand terrace of ladder slide block (14), and the rear end of ladder slide block (14) is provided with linear actuator (13); Suspension rod (12) is fixedly connected with the bracket (11) of more than a group, adjustment block (10) is placed in the upper surface of bracket (11), the conical central hole of counterweight (7) is freely placed on the cascaded surface of adjustment block (10) afterwards through vertical rod (5), and the cone block (6) that vertical rod (5) is fixedly connected with is positioned at the below of counterweight (7) and corresponding with conical central hole; The weight of returnable (1) and counterweight (7) acts on suspension rod (12), and passes to force snesor (9) by force transmitting board (16).
2. as claimed in claim 1 for the container Dynamic Weighting device of fluid flow verification, it is characterized in that, quantity+1, the first ladder that the ladder quantity of described ladder slide block (14) equals counterweight (7) is initial position.
3., as claimed in claim 1 or 2 for the container Dynamic Weighting device of fluid flow verification, it is characterized in that, between the ladder of described ladder slide block (14), adopt slope and round-corner transition.
4., as claimed in claim 1 or 2 for the container Dynamic Weighting device of fluid flow verification, it is characterized in that, described linear actuator (13) is realized by the mode of linear electric motors or motor wire distribution thick stick.
5., as claimed in claim 1 or 2 for the container Dynamic Weighting device of fluid flow verification, it is characterized in that, described pulley (4) is replaced by rolling bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420445266.2U CN204389008U (en) | 2014-08-08 | 2014-08-08 | A kind of container Dynamic Weighting device for fluid flow verification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420445266.2U CN204389008U (en) | 2014-08-08 | 2014-08-08 | A kind of container Dynamic Weighting device for fluid flow verification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204389008U true CN204389008U (en) | 2015-06-10 |
Family
ID=53361719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420445266.2U Withdrawn - After Issue CN204389008U (en) | 2014-08-08 | 2014-08-08 | A kind of container Dynamic Weighting device for fluid flow verification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204389008U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154982A (en) * | 2014-08-08 | 2014-11-19 | 北京航天试验技术研究所 | Dynamic container weighing device for calibrating liquid flow |
| CN113049073A (en) * | 2020-06-09 | 2021-06-29 | 昆山骅麟塑胶有限公司 | Balance type plastic particle master batch weighing device |
-
2014
- 2014-08-08 CN CN201420445266.2U patent/CN204389008U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154982A (en) * | 2014-08-08 | 2014-11-19 | 北京航天试验技术研究所 | Dynamic container weighing device for calibrating liquid flow |
| CN104154982B (en) * | 2014-08-08 | 2016-08-03 | 北京航天试验技术研究所 | A kind of container Dynamic Weighting device for fluid flow verification |
| CN113049073A (en) * | 2020-06-09 | 2021-06-29 | 昆山骅麟塑胶有限公司 | Balance type plastic particle master batch weighing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150610 Effective date of abandoning: 20160803 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |