CN206845590U - A kind of detection means of hydraulic oil bulk modulus - Google Patents

A kind of detection means of hydraulic oil bulk modulus Download PDF

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Publication number
CN206845590U
CN206845590U CN201720654246.XU CN201720654246U CN206845590U CN 206845590 U CN206845590 U CN 206845590U CN 201720654246 U CN201720654246 U CN 201720654246U CN 206845590 U CN206845590 U CN 206845590U
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CN
China
Prior art keywords
hydraulic oil
screw mandrel
cap
storage cylinder
bulk modulus
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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
CN201720654246.XU
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Chinese (zh)
Inventor
鲜小红
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Sichuan Vocational and Technical College
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Sichuan Vocational and Technical College
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Priority to CN201720654246.XU priority Critical patent/CN206845590U/en
Application granted granted Critical
Publication of CN206845590U publication Critical patent/CN206845590U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of detection means of hydraulic oil bulk modulus, including oil storage cylinder, oil storage cylinder is provided with end cap, the pressurizing piston for being used for compression hydraulic oil is provided with oil storage cylinder, one end of reinforcing screw mandrel is connected through end cap with pressurizing piston, and the other end is provided with pointer, and end cap is provided with the dial for being used for measuring indicators turn angle, reinforcing screw mandrel is threadedly coupled with end cap, and the oil storage cylinder is provided with the pressure gauge for being used for measuring hydraulic oil.Rotation reinforcing screw mandrel, record the change value of pressure, the angle that reinforcing screw mandrel rotates, and the diameter for combining pressurizing piston then can rapidly calculate hydraulic oil bulk modulus, its is simple in construction, easy to operate, is easy to carry about with one.

Description

A kind of detection means of hydraulic oil bulk modulus
Technical field
It the utility model is related to the detection technique field of hydraulic oil bulk modulus, more particularly to a kind of hydraulic oil volume The detection means of modulus of elasticity.
Background technology
The compressibility of hydraulic oil is not accounted in the analysis of most of hydraulic systems, because in the not high bar of pressure Ignoring the compressibility of liquid under part will not cause to significantly affect on analysis result.But in high-pressure system, hydraulic oil is pressed Contracting has large effect to the stability of the pressure in system and the stationarity of speed, so must be examined when analyzing and calculating Consider.
The compressibility of hydraulic oil generally represents that bulk modulus K is bigger, hydraulic pressure with the bulk modulus K of liquid The compressibility of oil is smaller;It is conversely, as the same.The bulk modulus K of hydraulic oil expression formula is:K=- Δ PV/ Δ V, in formula: The bulk modulus of K- hydraulic oil;Δ P- pressure increments;Volumes of the V- by compressed liquid under atmospheric pressure.
China Patent No. 201620957858.1, a kind of hydraulic oil effective volume modulus of elasticity measuring machine is disclosed, including Body, the upper end of the body is provided with column, and column is connected with hydraulic cylinder by linking arm, and the front end of the body is set There is controller, and the right-hand member of body is provided with cylinder, the lower end of the cylinder is provided with cylinder body, and the hydraulic stem of hydraulic cylinder stretches into In cylinder body, the upper end of the hydraulic stem is provided with mounting post, and the left end of mounting post is provided with grating, and the upper end of the cylinder is set Erecting bed is equipped with, and the upper end of erecting bed is provided with grating sensor, above-mentioned patent structure is complicated, and cost is higher, troublesome in poeration.
Utility model content
The defects of in order to overcome prior art, the utility model provide a kind of detection dress of hydraulic oil bulk modulus Put, the detection means intuitively can quickly measure the modulus of elasticity of hydraulic oil, and simple in construction, easy to operate.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is:
A kind of detection means of hydraulic oil bulk modulus, it is characterised in that:Including oil storage cylinder, the openend of oil storage cylinder Provided with end cap, the pressurizing piston for being used for compression hydraulic oil is provided with oil storage cylinder, the one end for reinforcing screw mandrel is lived through end cap and pressurization Plug connection, the other end are provided with pointer, and the end cap is provided with the dial for being used for measuring indicators turn angle, the reinforcing silk Bar is threadedly coupled with end cap, and the oil storage cylinder is provided with the pressure gauge for being used for measuring hydraulic oil.Rotation reinforcing screw mandrel, records pressure Change value, reinforcing screw mandrel rotate angle, and combine pressurizing piston diameter then can promptly calculate hydraulic oil volume bullet Property modulus, its is simple in construction, easy to operate, is easy to carry about with one.
There is gap between described reinforcing screw mandrel and pressurizing piston circumference, when screw mandrel rotates, pressurizing piston only makees straight line It is mobile, without rotating.
Also including sleeve, sleeve is socketed on reinforcing screw mandrel, and pointer is arranged on sleeve, after pointer zeroing, trip bolt Sleeve is fixed on reinforcing screw mandrel, is easy to the adjustment of pointer to be zeroed, realizes Serial regulation.
The oil storage cylinder is provided with oil filler and fuel outlet.
The reinforcing screw mandrel is that accurate thread is connected with end cap, and the pitch of accurate thread is 1mm.
A diameter of 200mm of the pressurizing piston.Above-mentioned size is convenient to be calculated, and improves detection efficiency.
The utility model has advantages below:
1st, the utility model is used for the pressurizing piston of compression hydraulic oil by being provided with oil storage cylinder, reinforces one end of screw mandrel It is connected through end cap with pressurizing piston, the other end is provided with pointer, and end cap is provided with the scale for being used for measuring indicators turn angle Disk, reinforcing screw mandrel are threadedly coupled with end cap, and the oil storage cylinder is provided with the pressure gauge for being used for measuring hydraulic oil.Rotation reinforcing silk Bar, record the change value of pressure, the angle that reinforcing screw mandrel rotates, and the diameter for combining pressurizing piston then can rapidly calculate liquid Bulk modulus is pressed oil, its is simple in construction, easy to operate, is easy to carry about with one.
2nd, circumferentially there is gap between reinforcing screw mandrel of the present utility model and pressurizing piston, when screw mandrel rotates, pressurizing piston Only move linearly, without rotating, action relationships are simple, improve the accuracy of measurement.
3rd, the utility model includes sleeve, and sleeve is socketed on reinforcing screw mandrel, and pointer is arranged on sleeve, pointer zeroing Afterwards, sleeve is fixed on reinforcing screw mandrel by trip bolt, is easy to the adjustment of pointer to be zeroed, is realized Serial regulation.
4th, the utility model reinforcing screw mandrel is that accurate thread is connected with end cap, and the pitch of accurate thread is 1mm.Pressurizing piston A diameter of 200mm.Above-mentioned size is convenient to be calculated, and improves detection efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Marked in figure:1st, oil storage cylinder, 2, pressurizing piston, 3, end cap, 4, reinforcing screw mandrel, 5, pressure gauge, 6, dial, 7, refer to Pin, 8, guide, 9, trip bolt, 10, oil filler, 11, fuel outlet.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings:
Embodiment 1
As shown in figure 1, a kind of detection means of hydraulic oil bulk modulus, including oil storage cylinder 1, oil storage cylinder 1 are one end The cylindrical container of opening, oil storage cylinder is provided with oil filler 10 and fuel outlet 11, for refueling or draining the oil to oil storage cylinder 1.In oil storage The openend of cylinder 1 is provided with end cap 3, is to be threadedly coupled between end cap 3 and oil storage cylinder 1, and the center of end cap is precision threaded hole, oil storage The pressurizing piston 2 for being used for compression hydraulic oil is provided with cylinder 1, reinforcing screw mandrel 4 is that accurate thread is connected with the center of end cap, reinforces silk It is connected in one end insertion oil storage cylinder 1 of bar 4 with pressurizing piston 2, the other end is located at the outside of oil storage cylinder 1, the reinforcing positioned at outside Screw mandrel 4 is provided with pointer 7, and the end cap 3 is provided with the dial 6 for being used for measuring indicators turn angle, is provided with oil storage cylinder 1 For measuring the pressure gauge 5 of hydraulic oil.Rotation reinforcing screw mandrel, record the change value of pressure, the angle that reinforcing screw mandrel rotates, and tie Closing the diameter of pressurizing piston then can rapidly calculate hydraulic oil bulk modulus, and its is simple in construction, easy to operate, is easy to take Band.
Further, reinforcing between screw mandrel 4 and pressurizing piston 2 circumferentially has gap, and when screw mandrel rotates, pressurizing piston is only made Rectilinear movement, without rotating.
Further also to include sleeve, sleeve is socketed on reinforcing screw mandrel, and pointer is arranged on sleeve, after pointer zeroing, Sleeve is fixed on reinforcing screw mandrel by trip bolt, is easy to the adjustment of pointer to be zeroed, is realized Serial regulation.
It is 200mm by the diameter design of pressurizing piston, the axial dimension of oil storage cylinder takes 500mm, oil storage cylinder for ease of calculating Left end have end cap.It is to be threadedly coupled between end cap and cylinder body, the center of end cap is precision threaded hole, reinforces screw mandrel and end cap Center is accurate thread connection, and the pitch of accurate thread is 1mm.Circumferentially there is gap between reinforcing screw mandrel and pressurizing piston, work as silk When bar rotates, pressurizing piston can only move linearly.There are dial and pointer in reinforcing screw mandrel right-hand member, can show that screw mandrel rotates Angle.Pointer carries guide, is made with holding screw circumferentially fixed between guide and screw mandrel, there is zeroing.Measure certain Volume(V)Pressure oil be put into oil storage cylinder as depicted, rotary screw is moved to the left pressurizing piston, and observes pressure Table, pointer is set to rest on non-zero position, then reversely rotating screw mandrel makes pressure gauge rest on zero-bit.Then oil storage cylinder right-hand member adjustment is carved Relative position between scale and pointer, makes pointer be zeroed, record data P1=0, V1=V.Appropriate rotary screw adds to hydraulic oil Pressure, write down the reading value P of hydralic pressure gauge2, the anglec of rotation x of screw mandrel, then V2=x1 π1002 /360。
So Δ P=P2- P1,ΔV= V2 –V1,Substitute into the volume elasticity that formula K=- Δ PV/ Δs V just can obtain hydraulic oil Modulus.

Claims (6)

  1. A kind of 1. detection means of hydraulic oil bulk modulus, it is characterised in that:Including oil storage cylinder (1), oil storage cylinder (1) is opened Mouth end is provided with end cap (3), is provided with the pressurizing piston (2) for being used for compression hydraulic oil in oil storage cylinder (1), reinforces one end of screw mandrel (4) It is connected through end cap (3) with pressurizing piston (2), the other end is provided with pointer (7), and the end cap (3) is provided with to be referred to for measurement The dial (6) of pin (7) rotational angle, the reinforcing screw mandrel (4) are threadedly coupled with end cap (3), set on the oil storage cylinder (1) Have for measuring the pressure gauge of hydraulic oil (5).
  2. 2. the detection means of hydraulic oil bulk modulus according to claim 1, it is characterised in that:Described reinforcing silk Circumferentially there is gap between bar (4) and pressurizing piston (2).
  3. 3. the detection means of hydraulic oil bulk modulus according to claim 1, it is characterised in that:Also include sleeve (8), sleeve (8) is socketed on reinforcing screw mandrel (4), and pointer (7) is arranged on sleeve (8), after pointer (7) zeroing, trip bolt (9) sleeve (8) is fixed on reinforcing screw mandrel (4).
  4. 4. the detection means of hydraulic oil bulk modulus according to claim 1, it is characterised in that:The oil storage cylinder (1) oil filler (11) and fuel outlet (12) are provided with.
  5. 5. the detection means of hydraulic oil bulk modulus according to claim 1, it is characterised in that:The reinforcing screw mandrel (4) it is that accurate thread is connected with end cap (3), the pitch of accurate thread is 1mm.
  6. 6. the detection means of hydraulic oil bulk modulus according to claim 1, it is characterised in that:The pressurizing piston (2) a diameter of 200mm.
CN201720654246.XU 2017-06-07 2017-06-07 A kind of detection means of hydraulic oil bulk modulus Expired - Fee Related CN206845590U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720654246.XU CN206845590U (en) 2017-06-07 2017-06-07 A kind of detection means of hydraulic oil bulk modulus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720654246.XU CN206845590U (en) 2017-06-07 2017-06-07 A kind of detection means of hydraulic oil bulk modulus

Publications (1)

Publication Number Publication Date
CN206845590U true CN206845590U (en) 2018-01-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108760519A (en) * 2018-07-26 2018-11-06 中国人民解放军海军工程大学 A kind of fluid bulk modulus detection sensor and detection method
CN110487366A (en) * 2018-05-14 2019-11-22 四川职业技术学院 A kind of hydraulic platform scale and its weighing technique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110487366A (en) * 2018-05-14 2019-11-22 四川职业技术学院 A kind of hydraulic platform scale and its weighing technique
CN110487366B (en) * 2018-05-14 2021-05-25 四川职业技术学院 Hydraulic platform scale and weighing method thereof
CN108760519A (en) * 2018-07-26 2018-11-06 中国人民解放军海军工程大学 A kind of fluid bulk modulus detection sensor and detection method

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180105

Termination date: 20180607

CF01 Termination of patent right due to non-payment of annual fee