CN211978279U - Screw temperature control film clamping device - Google Patents
Screw temperature control film clamping device Download PDFInfo
- Publication number
- CN211978279U CN211978279U CN202021078181.7U CN202021078181U CN211978279U CN 211978279 U CN211978279 U CN 211978279U CN 202021078181 U CN202021078181 U CN 202021078181U CN 211978279 U CN211978279 U CN 211978279U
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- flange
- film clamping
- screw rod
- connecting screw
- heater
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 239000000498 cooling water Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 abstract description 15
- 230000035939 shock Effects 0.000 abstract description 12
- 238000012360 testing method Methods 0.000 abstract description 10
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 description 10
- 239000007789 gas Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
The utility model discloses a screw rod accuse temperature presss from both sides membrane device. The film clamping device comprises a left flange and a right flange which are arranged in front and back, wherein a driving section is fixed at the left end of the left flange, a driven section is fixed at the right end of the right flange, a horizontally moving diaphragm I, a film clamping ring I, a diaphragm II and a film clamping ring II are sequentially fixed on a central axis between the left flange and the right flange, uniformly distributed connecting screw rods are fixed in the circumferential direction between the left flange and the right flange, and symmetrical telescopic oil cylinders are also fixed between the left flange and the right flange; the central axis of the connecting screw rod is provided with a cavity, a heater is arranged in the cavity between the left flange and the right flange, a water cooling sleeve is sleeved outside the connecting screw rod at the position corresponding to the heater, and the heater is connected with an external power supply. The film clamping device is simple, efficient and reliable, can provide enough clamping force for the diaphragms of shock tunnel ground test equipment, and is particularly suitable for the conditions that the caliber of a shock tube is large, the pressure is high, the requirement on the clamping force is high, and the measurement and control requirements on the film clamping position are high.
Description
Technical Field
The utility model belongs to the technical field of hypersonic test equipment, concretely relates to screw rod accuse temperature presss from both sides membrane device.
Background
Impulse type test equipment such as shock tunnel is essential key equipment for ultra-high speed ground simulation test. Such devices have a common feature: before the test, the shock tube is divided into a plurality of tube sections by using the metal membrane, different tube sections are filled with gases with different pressures, and measures are taken to break the membrane during the test so as to finish the test. Therefore, it is necessary to design a device for ensuring the clamping and sealing of the membrane between different tube sections of the shock tube, namely a membrane clamping mechanism.
The hydraulic cylinder film clamping mechanism, the broken thread film clamping mechanism and the full thread film clamping mechanism are common film clamping mechanisms. The hydraulic cylinder film clamping mechanism provides clamping force for the diaphragm in a mode of pressurizing the hydraulic cylinder, and has the advantages of strong diaphragm thickness adaptability, small loss of the driving force conversion clamping force and the like. The film clamping principle of the broken thread film clamping mechanism is similar to that of the full thread film clamping mechanism, namely, the different pipe sections are connected by adopting a rotary nut with positive and negative threads processed at two ends respectively, and the oil cylinder is arranged on the outer side of the rotary nut to drive the rotary nut to rotate forwards or reversely, so that the two pipe sections are closed or separated to clamp/release the film. The thread film clamping mechanism has the advantages of compact structure and high connection rigidity, but because the film clamping force is generated by the rotation of the thread pair, the thread occlusion is easy to occur under the working condition of large clamping force load. In addition, the film clamping components of the thread film clamping mechanism are all positioned in the rotary nut, and the operation of inflation and deflation, measurement and control and the like at the film clamping position is not facilitated.
At present, the development of a novel film clamping device suitable for a shock tunnel is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a screw rod accuse temperature presss from both sides membrane device is provided.
The utility model discloses a screw rod accuse temperature presss from both sides membrane device, its characteristics are, press from both sides membrane device include front and back left flange and right flange of arranging, the center of left flange and right flange all opens internal thread hole I, the circumference of left flange opens the internal thread hole II that has the equipartition, open the through-hole that corresponds with internal thread hole II on the circumference position of right flange;
the driving section is a cylinder I, an external thread is arranged at the right end of the cylinder I, the external thread of the driving section is assembled with an internal thread hole I of the left flange through threads, the driving section is fixed on the left end face of the left flange, and high-pressure driving gas is filled in a cavity of the driving section;
the driven section is a cylinder II, the left end of the cylinder II is provided with an external thread, the external thread of the driven section is assembled with the internal thread hole I of the right flange through threads, the driven section is fixed on the right end face of the right flange, and low-pressure driven gas is filled in the cavity of the driven section;
a diaphragm I, a film clamping ring I, a diaphragm II and a film clamping ring II which move horizontally are sequentially fixed on a central axis between the right end face of the left flange and the left end face of the right flange from front to back; telescopic oil cylinders are symmetrically arranged between the right end face of the left flange and the left end face of the right flange;
the connecting screw rod sequentially penetrates through the internal threaded hole II and the through hole from left to right, the left end of the connecting screw rod is assembled with the internal threaded hole II through the external thread, the left end of the connecting screw rod is fixed on the left flange, the right end of the connecting screw rod is assembled with the fastening nut through the external thread, and the right end of the connecting screw rod is fixed on the right flange;
the central axis of the connecting screw rod is provided with a cavity, a heater is arranged in the cavity between the right end surface of the left flange and the left end surface of the right flange, a water cooling sleeve is sleeved outside the connecting screw rod at the position corresponding to the heater, and the heater is connected with an external power supply.
Furthermore, the water cooling jacket is a water cooling jacket, and is provided with a water inlet and a water outlet, and cooling water is introduced into the water cooling jacket.
Furthermore, the connecting screw rod is made of high-temperature high-strength steel.
Further, the heater is a rod heater.
Furthermore, the film clamping ring I or the film clamping ring II is provided with an air charging hole and an air discharging hole.
Furthermore, a measuring hole is formed in the film clamping ring I or the film clamping ring II, and a pressure sensor or a temperature sensor is installed in the measuring hole.
The utility model discloses a screw rod accuse temperature presss from both sides membrane device has following advantage:
1. the diaphragm pre-tightening force is generated by the contraction deformation of the connecting screw rod, the sum of the stretching pre-stress of the connecting screw rod is the diaphragm clamping force, and the force conversion efficiency is high;
2. simple structure, large clamping force, high temperature and high strength steel as the connecting screw diameter of 200mm, 100 deg.C temperature difference to make the heating section of the connecting screw generate 1.2% elastic deformation, and each connecting screw can generate 3.8 × 10 calculated by the heating length being half of the stretching length7N pre-tightening force;
3. after the diaphragm is clamped, all connections are in threaded connection and have huge axial pretightening force, and all connections cannot be loosened before the connecting screw rod is not heated again;
4. the nut is tightened after the connecting screw has been heated and extended, in which case the nut is substantially unloaded and can be turned very lightly.
The utility model discloses a screw rod accuse temperature presss from both sides membrane device is simple, high-efficient, reliable.
The utility model discloses a screw rod accuse temperature presss from both sides membrane device can provide sufficient clamp force for shock tunnel class ground test equipment's diaphragm, and the specially adapted shock tube bore is big, pressure is high, the clamp force requires high, the many circumstances of demand are observed and controled to the clamp membrane department.
Drawings
FIG. 1 is a schematic structural view of the screw temperature-controlling film-clamping device of the present invention;
fig. 2 is a schematic perspective view of the screw temperature-controlling film-clamping device of the present invention.
In the figure, 1, a driving section 2, a left flange 3, a water cooling sleeve 4, a connecting screw rod 5, a heater 6, a fastening nut 7, a right flange 8, a diaphragm I9, a diaphragm clamping ring I10, a diaphragm II 11, a diaphragm clamping ring II 12, a telescopic oil cylinder 13 and a driven section are arranged.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1 and 2, the screw temperature-control film clamping device of the embodiment includes a driving section 1, a left flange 2, a water-cooling jacket 3, a connecting screw 4, a heater 5, a fastening nut 6, a right flange 7, a membrane i 8, a film clamping ring i 9, a membrane ii 10, a film clamping ring ii 11, a telescopic cylinder 12 and a driven section 13;
the driving section 1: the shock tube is an upstream tube section of the shock tube, the interior of the shock tube is a cylindrical cavity, high-pressure driving gas is filled into the cavity during testing, and the right end of the driving section 1 is provided with external threads which are in threaded connection with an internal thread hole I in the center of the left flange 2;
and (3) a left flange 2: the driving section is installed at the right end of the driving section 1 through threads, an internal thread hole I is formed in the center, internal thread holes II which are uniformly distributed along the center are machined in four corners, and the internal thread holes II are used for installing connecting screws 4;
diaphragm I8: the circular film piece is positioned at the downstream of the driving section 1 and is clamped by the driving section 1 and the film clamping ring I9;
and (3) a clamping ring I9: the cylindrical diaphragm is positioned at the downstream of the diaphragm I8 and used for bearing the impact of each opened split of the diaphragm I8 and accommodating each opened split of the diaphragm I8, and the diaphragm clamping ring I9 is provided with a plurality of holes for inflation, deflation and measurement;
and (3) a diaphragm II 10: the circular film piece is positioned at the downstream of the film clamping ring I9 and is clamped by the film clamping ring I9 and the film clamping ring II 11;
and a film clamping ring II 11: the cylindrical diaphragm is positioned at the downstream of the diaphragm II 10 and used for bearing the impact of each opened split of the diaphragm II 10 and accommodating each opened split of the diaphragm II 10, and a plurality of holes are formed in the diaphragm clamping ring II 11 and used for inflation, deflation and measurement;
and (7) a right flange: the connecting screw rod 4 is arranged at the left end of the driven section 13 through threads, an internal threaded hole I is formed in the center of the driven section, through holes corresponding to the internal threaded holes II of the left flange 2 are formed in four corners of the driven section, and the connecting screw rod can penetrate through the through holes;
driven segment 13: the low-pressure driven gas is filled into the downstream pipe section of the shock tube during the test, and the left end of the driven section 13 is provided with external threads which are in threaded connection with the internal threaded hole I of the right flange 7.
The connecting screw rod 4: the number of the hollow double-end studs with external threads processed at two ends is 4; the left side external thread of the connecting screw rod 4 is short in length and is installed in the internal thread holes II at the four corners of the left flange 2, and the right side external thread of the connecting screw rod 4 is long in length, penetrates through the through holes at the four corners of the right flange 7 and is in threaded connection with the fastening nut 6; a circular through hole is processed on the central axis of the connecting screw rod 4 and used for installing a heater 5; the outer surface of the connecting screw rod 4 between the right end surface of the left flange 2 and the left end surface of the right flange 7 is provided with a water cooling jacket 3;
and (3) water cooling jacket: the cooling water pipe is of a jacket structure, a water inlet and a water outlet are arranged on two sides of the jacket, and a cooling water flow passage is arranged in the jacket; the water cooling jacket 3 is installed on the connecting screw rod 4 in a transition fit mode, the installation position basically corresponds to the position of the heater 5, and the water cooling jacket is used for rapidly cooling the heated connecting screw rod 4; the number of the water cooling sleeves 3 is 4;
a heater 5: the heater is a rod-type heater, the surface of the heater is subjected to insulation treatment, a lead is positioned at the end, the heater 5 is arranged in a through hole of the central axis of the connecting screw rod 4 and is used for heating the connecting screw rod 4 to enable the connecting screw rod 4 to generate cold and hot deformation, and the heater 5 is positioned at the part of the connecting screw rod 4 between the right end surface of the left flange 2 and the left end surface of the right flange 7; the number of the heaters 5 is 4;
and (6) fastening the nut: the left flange 2 and the right flange 7 are tensioned together with the connecting screw rod 4; the number is 4;
the telescopic oil cylinder 12: two ends of the left flange are respectively fixed on the right end face of the left flange 2 and the left end face of the right flange 7, and the left flange and the right flange are used for controlling the separation and the approach of the left flange 2 and the right flange 7, the number of the left flange and the right flange is 2, and the left flange and the right flange are symmetrically arranged up and down.
The specific working process of this embodiment is as follows:
a. closing the flow of cooling water in the water cooling sleeve 3, starting the heater 5 to heat the connecting screw rod 4, axially extending the connecting screw rod 4, separating the fastening nut 6 from the right end face of the right flange 7, loosening the fastening nut 6 by the distance of clamping and detaching the diaphragm I8 and the diaphragm II 10;
b. opening the telescopic oil cylinder 12, wherein the telescopic oil cylinder 12 pushes the left flange 2 and the right flange 7 to deviate from each other until the right flange 7 tightly pushes the fastening nut 6, and closing the telescopic oil cylinder 12;
c. removing the old diaphragm I8 and the diaphragm II 10, and clamping the new diaphragm I8 and the new diaphragm II 10;
d. opening a telescopic oil cylinder 12, pulling a left flange 2 and a right flange 7 to be close by the telescopic oil cylinder 12, preliminarily clamping a diaphragm I8 and a diaphragm II 10, screwing a fastening nut 6, enabling the fastening nut 6 to tightly push against the right end face of the right flange 7, and closing the telescopic oil cylinder 12;
e. the temperature of the heater 5 is reduced, when necessary, cooling water in the water cooling jacket 3 is started to flow, the cooling of the connecting screw rod 4 is accelerated, the connecting screw rod 4 axially contracts along with the reduction of the temperature of the connecting screw rod 4, the connecting screw rod 4 generates tensile prestress, pretightening force is provided for the new diaphragm I8 and the new diaphragm II 10, and the pretightening force is provided until the new diaphragm I8 and the new diaphragm II 10 are clamped.
The water cooling jacket in the embodiment is a water cooling jacket, and is provided with a water inlet and a water outlet, and cooling water is introduced into the water cooling jacket.
The connecting screw rod in the embodiment is made of high-temperature high-strength steel.
The heater in this embodiment is a rod heater.
The film clamping ring I or the film clamping ring II in the embodiment is provided with an air charging hole and an air discharging hole.
The film clamping ring I or the film clamping ring II in the embodiment is provided with a measuring hole, and the measuring hole is provided with a pressure sensor or a temperature sensor.
The above is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (6)
1. The screw temperature control film clamping device is characterized by comprising a left flange (2) and a right flange (7) which are arranged in front and back, wherein inner threaded holes I are formed in the centers of the left flange (2) and the right flange (7), inner threaded holes II are uniformly distributed in the circumferential direction of the left flange (2), and through holes corresponding to the inner threaded holes II are formed in the circumferential position of the right flange (7);
the driving section (1) is a cylinder I, an external thread is arranged at the right end of the cylinder I, the external thread of the driving section (1) is assembled with an internal thread hole I of the left flange (2) through a thread, the driving section (1) is fixed on the left end face of the left flange (2), and a cavity of the driving section (1) is filled with high-pressure driving gas;
the driven section (13) is a cylinder II, the left end of the cylinder II is provided with an external thread, the external thread of the driven section (13) is assembled with the internal thread hole I of the right flange (7) through threads, the driven section (13) is fixed on the right end face of the right flange (7), and low-pressure driven gas is filled in the cavity of the driven section (13);
a horizontally moving diaphragm I (8), a film clamping ring I (9), a diaphragm II (10) and a film clamping ring II (11) are sequentially fixed from front to back on a central axis between the right end face of the left flange (2) and the left end face of the right flange (7); telescopic oil cylinders (12) are symmetrically arranged between the right end face of the left flange (2) and the left end face of the right flange (7);
the connecting screw rod (4) sequentially penetrates through the internal threaded hole II and the through hole from left to right, the left end of the connecting screw rod (4) is assembled with the internal threaded hole II through external threads, the left end of the connecting screw rod (4) is fixed on the left flange (2), the right end of the connecting screw rod (4) is assembled with the fastening nut (6) through the external threads, and the right end of the connecting screw rod (4) is fixed on the right flange (7);
a cavity is formed in the central axis of the connecting screw rod (4), a heater (5) is installed in the cavity between the right end face of the left flange (2) and the left end face of the right flange (7), a water cooling sleeve (3) is sleeved outside the connecting screw rod (4) at the position corresponding to the heater (5), and the heater (5) is connected with an external power supply.
2. The screw temperature-control film clamping device according to claim 1, wherein the water cooling jacket (3) is a water cooling jacket and is provided with a water inlet and a water outlet, and cooling water is introduced into the water cooling jacket (3).
3. The screw temperature-control film clamping device according to claim 1, wherein the connecting screw (4) is made of high-temperature high-strength steel.
4. The screw temperature-control film clamping device according to claim 1, wherein the heater (5) is a rod-type heater.
5. The screw temperature-control film clamping device according to claim 1, wherein the film clamping ring I (9) or the film clamping ring II (11) is provided with an air charging hole and an air discharging hole.
6. The screw temperature-control film clamping device according to claim 1, wherein a measuring hole is formed in the film clamping ring I (9) or the film clamping ring II (11), and a pressure sensor or a temperature sensor is mounted in the measuring hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021078181.7U CN211978279U (en) | 2020-06-12 | 2020-06-12 | Screw temperature control film clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021078181.7U CN211978279U (en) | 2020-06-12 | 2020-06-12 | Screw temperature control film clamping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211978279U true CN211978279U (en) | 2020-11-20 |
Family
ID=73368300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021078181.7U Withdrawn - After Issue CN211978279U (en) | 2020-06-12 | 2020-06-12 | Screw temperature control film clamping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211978279U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579200A (en) * | 2020-06-12 | 2020-08-25 | 中国空气动力研究与发展中心超高速空气动力研究所 | Screw temperature control film clamping device |
| CN114112287A (en) * | 2021-10-26 | 2022-03-01 | 郑州机械研究所有限公司 | Clamping mechanism for clamping and replacing diaphragm |
-
2020
- 2020-06-12 CN CN202021078181.7U patent/CN211978279U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111579200A (en) * | 2020-06-12 | 2020-08-25 | 中国空气动力研究与发展中心超高速空气动力研究所 | Screw temperature control film clamping device |
| CN111579200B (en) * | 2020-06-12 | 2024-03-26 | 中国空气动力研究与发展中心超高速空气动力研究所 | Screw temperature control film clamping device |
| CN114112287A (en) * | 2021-10-26 | 2022-03-01 | 郑州机械研究所有限公司 | Clamping mechanism for clamping and replacing diaphragm |
| CN114112287B (en) * | 2021-10-26 | 2023-10-03 | 郑州机械研究所有限公司 | Clamping mechanism for clamping and replacing membrane |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20201120 Effective date of abandoning: 20240326 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20201120 Effective date of abandoning: 20240326 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |